diff -r 000000000000 -r 6474c204b198 mobile/android/base/Tab.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mobile/android/base/Tab.java	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,845 @@
+/* -*- Mode: Java; c-basic-offset: 4; tab-width: 20; indent-tabs-mode: nil; -*-
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+package org.mozilla.gecko;
+
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.HashMap;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
+import org.json.JSONException;
+import org.json.JSONObject;
+import org.mozilla.gecko.db.BrowserContract.Bookmarks;
+import org.mozilla.gecko.db.BrowserDB;
+import org.mozilla.gecko.gfx.Layer;
+import org.mozilla.gecko.util.ThreadUtils;
+
+import android.content.ContentResolver;
+import android.content.Context;
+import android.graphics.Bitmap;
+import android.graphics.Color;
+import android.graphics.drawable.BitmapDrawable;
+import android.os.Build;
+import android.text.TextUtils;
+import android.util.Log;
+import android.view.View;
+
+public class Tab {
+    private static final String LOGTAG = "GeckoTab";
+
+    private static Pattern sColorPattern;
+    private final int mId;
+    private long mLastUsed;
+    private String mUrl;
+    private String mBaseDomain;
+    private String mUserSearch;
+    private String mTitle;
+    private Bitmap mFavicon;
+    private String mFaviconUrl;
+    private int mFaviconSize;
+    private boolean mHasFeeds;
+    private boolean mHasOpenSearch;
+    private SiteIdentity mSiteIdentity;
+    private boolean mReaderEnabled;
+    private BitmapDrawable mThumbnail;
+    private int mHistoryIndex;
+    private int mHistorySize;
+    private int mParentId;
+    private boolean mExternal;
+    private boolean mBookmark;
+    private boolean mReadingListItem;
+    private int mFaviconLoadId;
+    private String mContentType;
+    private boolean mHasTouchListeners;
+    private ZoomConstraints mZoomConstraints;
+    private boolean mIsRTL;
+    private ArrayList<View> mPluginViews;
+    private HashMap<Object, Layer> mPluginLayers;
+    private int mBackgroundColor;
+    private int mState;
+    private Bitmap mThumbnailBitmap;
+    private boolean mDesktopMode;
+    private boolean mEnteringReaderMode;
+    private Context mAppContext;
+    private ErrorType mErrorType = ErrorType.NONE;
+    private static final int MAX_HISTORY_LIST_SIZE = 50;
+    private volatile int mLoadProgress;
+    private volatile int mRecordingCount = 0;
+    private String mMostRecentHomePanel;
+
+    public static final int STATE_DELAYED = 0;
+    public static final int STATE_LOADING = 1;
+    public static final int STATE_SUCCESS = 2;
+    public static final int STATE_ERROR = 3;
+
+    public static final int LOAD_PROGRESS_INIT = 10;
+    public static final int LOAD_PROGRESS_START = 20;
+    public static final int LOAD_PROGRESS_LOCATION_CHANGE = 60;
+    public static final int LOAD_PROGRESS_LOADED = 80;
+    public static final int LOAD_PROGRESS_STOP = 100;
+
+    private static final int DEFAULT_BACKGROUND_COLOR = Color.WHITE;
+
+    public enum ErrorType {
+        CERT_ERROR,  // Pages with certificate problems
+        BLOCKED,     // Pages blocked for phishing or malware warnings
+        NET_ERROR,   // All other types of error
+        NONE         // Non error pages
+    }
+
+    public Tab(Context context, int id, String url, boolean external, int parentId, String title) {
+        mAppContext = context.getApplicationContext();
+        mId = id;
+        mLastUsed = 0;
+        mUrl = url;
+        mBaseDomain = "";
+        mUserSearch = "";
+        mExternal = external;
+        mParentId = parentId;
+        mTitle = title == null ? "" : title;
+        mFavicon = null;
+        mFaviconUrl = null;
+        mFaviconSize = 0;
+        mHasFeeds = false;
+        mHasOpenSearch = false;
+        mSiteIdentity = new SiteIdentity();
+        mReaderEnabled = false;
+        mEnteringReaderMode = false;
+        mThumbnail = null;
+        mHistoryIndex = -1;
+        mHistorySize = 0;
+        mBookmark = false;
+        mReadingListItem = false;
+        mFaviconLoadId = 0;
+        mContentType = "";
+        mZoomConstraints = new ZoomConstraints(false);
+        mPluginViews = new ArrayList<View>();
+        mPluginLayers = new HashMap<Object, Layer>();
+        mState = shouldShowProgress(url) ? STATE_LOADING : STATE_SUCCESS;
+        mLoadProgress = LOAD_PROGRESS_INIT;
+
+        // At startup, the background is set to a color specified by LayerView
+        // when the LayerView is created. Shortly after, this background color
+        // will be used before the tab's content is shown.
+        mBackgroundColor = DEFAULT_BACKGROUND_COLOR;
+
+        updateBookmark();
+    }
+
+    private ContentResolver getContentResolver() {
+        return mAppContext.getContentResolver();
+    }
+
+    public void onDestroy() {
+        Tabs.getInstance().notifyListeners(this, Tabs.TabEvents.CLOSED);
+    }
+
+    public int getId() {
+        return mId;
+    }
+
+    public synchronized void onChange() {
+        mLastUsed = System.currentTimeMillis();
+    }
+
+    public synchronized long getLastUsed() {
+        return mLastUsed;
+    }
+
+    public int getParentId() {
+        return mParentId;
+    }
+
+    // may be null if user-entered query hasn't yet been resolved to a URI
+    public synchronized String getURL() {
+        return mUrl;
+    }
+
+    // mUserSearch should never be null, but it may be an empty string
+    public synchronized String getUserSearch() {
+        return mUserSearch;
+    }
+
+    // mTitle should never be null, but it may be an empty string
+    public synchronized String getTitle() {
+        return mTitle;
+    }
+
+    public String getDisplayTitle() {
+        if (mTitle != null && mTitle.length() > 0) {
+            return mTitle;
+        }
+
+        return mUrl;
+    }
+
+    public String getBaseDomain() {
+        return mBaseDomain;
+    }
+
+    public Bitmap getFavicon() {
+        return mFavicon;
+    }
+
+    public BitmapDrawable getThumbnail() {
+        return mThumbnail;
+    }
+
+    public String getMostRecentHomePanel() {
+        return mMostRecentHomePanel;
+    }
+
+    public void setMostRecentHomePanel(String panelId) {
+        mMostRecentHomePanel = panelId;
+    }
+
+    public Bitmap getThumbnailBitmap(int width, int height) {
+        if (mThumbnailBitmap != null) {
+            // Bug 787318 - Honeycomb has a bug with bitmap caching, we can't
+            // reuse the bitmap there.
+            boolean honeycomb = (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB
+                              && Build.VERSION.SDK_INT <= Build.VERSION_CODES.HONEYCOMB_MR2);
+            boolean sizeChange = mThumbnailBitmap.getWidth() != width
+                              || mThumbnailBitmap.getHeight() != height;
+            if (honeycomb || sizeChange) {
+                mThumbnailBitmap = null;
+            }
+        }
+
+        if (mThumbnailBitmap == null) {
+            Bitmap.Config config = (GeckoAppShell.getScreenDepth() == 24) ?
+                Bitmap.Config.ARGB_8888 : Bitmap.Config.RGB_565;
+            mThumbnailBitmap = Bitmap.createBitmap(width, height, config);
+        }
+
+        return mThumbnailBitmap;
+    }
+
+    public void updateThumbnail(final Bitmap b) {
+        ThreadUtils.postToBackgroundThread(new Runnable() {
+            @Override
+            public void run() {
+                if (b != null) {
+                    try {
+                        mThumbnail = new BitmapDrawable(mAppContext.getResources(), b);
+                        if (mState == Tab.STATE_SUCCESS)
+                            saveThumbnailToDB();
+                    } catch (OutOfMemoryError oom) {
+                        Log.w(LOGTAG, "Unable to create/scale bitmap.", oom);
+                        mThumbnail = null;
+                    }
+                } else {
+                    mThumbnail = null;
+                }
+
+                Tabs.getInstance().notifyListeners(Tab.this, Tabs.TabEvents.THUMBNAIL);
+            }
+        });
+    }
+
+    public synchronized String getFaviconURL() {
+        return mFaviconUrl;
+    }
+
+    public boolean hasFeeds() {
+        return mHasFeeds;
+    }
+
+    public boolean hasOpenSearch() {
+        return mHasOpenSearch;
+    }
+
+    public SiteIdentity getSiteIdentity() {
+        return mSiteIdentity;
+    }
+
+    public boolean getReaderEnabled() {
+        return mReaderEnabled;
+    }
+
+    public boolean isBookmark() {
+        return mBookmark;
+    }
+
+    public boolean isReadingListItem() {
+        return mReadingListItem;
+    }
+
+    public boolean isExternal() {
+        return mExternal;
+    }
+
+    public synchronized void updateURL(String url) {
+        if (url != null && url.length() > 0) {
+            mUrl = url;
+        }
+    }
+
+    private synchronized void updateUserSearch(String userSearch) {
+        mUserSearch = userSearch;
+    }
+
+    public void setErrorType(String type) {
+        if ("blocked".equals(type))
+            setErrorType(ErrorType.BLOCKED);
+        else if ("certerror".equals(type))
+            setErrorType(ErrorType.CERT_ERROR);
+        else if ("neterror".equals(type))
+            setErrorType(ErrorType.NET_ERROR);
+        else
+            setErrorType(ErrorType.NONE);
+    }
+
+    public void setErrorType(ErrorType type) {
+        mErrorType = type;
+    }
+
+    public ErrorType getErrorType() {
+        return mErrorType;
+    }
+
+    public void setContentType(String contentType) {
+        mContentType = (contentType == null) ? "" : contentType;
+    }
+
+    public String getContentType() {
+        return mContentType;
+    }
+
+    public synchronized void updateTitle(String title) {
+        // Keep the title unchanged while entering reader mode.
+        if (mEnteringReaderMode) {
+            return;
+        }
+
+        // If there was a title, but it hasn't changed, do nothing.
+        if (mTitle != null &&
+            TextUtils.equals(mTitle, title)) {
+            return;
+        }
+
+        mTitle = (title == null ? "" : title);
+        Tabs.getInstance().notifyListeners(this, Tabs.TabEvents.TITLE);
+    }
+
+    public void setState(int state) {
+        mState = state;
+
+        if (mState != Tab.STATE_LOADING)
+            mEnteringReaderMode = false;
+    }
+
+    public int getState() {
+        return mState;
+    }
+
+    public void setZoomConstraints(ZoomConstraints constraints) {
+        mZoomConstraints = constraints;
+    }
+
+    public ZoomConstraints getZoomConstraints() {
+        return mZoomConstraints;
+    }
+
+    public void setIsRTL(boolean aIsRTL) {
+        mIsRTL = aIsRTL;
+    }
+
+    public boolean getIsRTL() {
+        return mIsRTL;
+    }
+
+    public void setHasTouchListeners(boolean aValue) {
+        mHasTouchListeners = aValue;
+    }
+
+    public boolean getHasTouchListeners() {
+        return mHasTouchListeners;
+    }
+
+    public void setFaviconLoadId(int faviconLoadId) {
+        mFaviconLoadId = faviconLoadId;
+    }
+
+    public int getFaviconLoadId() {
+        return mFaviconLoadId;
+    }
+
+    /**
+     * Returns true if the favicon changed.
+     */
+    public boolean updateFavicon(Bitmap favicon) {
+        if (mFavicon == favicon) {
+            return false;
+        }
+        mFavicon = favicon;
+        return true;
+    }
+
+    public synchronized void updateFaviconURL(String faviconUrl, int size) {
+        // If we already have an "any" sized icon, don't update the icon.
+        if (mFaviconSize == -1)
+            return;
+
+        // Only update the favicon if it's bigger than the current favicon.
+        // We use -1 to represent icons with sizes="any".
+        if (size == -1 || size >= mFaviconSize) {
+            mFaviconUrl = faviconUrl;
+            mFaviconSize = size;
+        }
+    }
+
+    public synchronized void clearFavicon() {
+        // Keep the favicon unchanged while entering reader mode
+        if (mEnteringReaderMode)
+            return;
+
+        mFavicon = null;
+        mFaviconUrl = null;
+        mFaviconSize = 0;
+    }
+
+    public void setHasFeeds(boolean hasFeeds) {
+        mHasFeeds = hasFeeds;
+    }
+
+    public void setHasOpenSearch(boolean hasOpenSearch) {
+        mHasOpenSearch = hasOpenSearch;
+    }
+
+    public void updateIdentityData(JSONObject identityData) {
+        mSiteIdentity.update(identityData);
+    }
+
+    public void setReaderEnabled(boolean readerEnabled) {
+        mReaderEnabled = readerEnabled;
+        Tabs.getInstance().notifyListeners(this, Tabs.TabEvents.MENU_UPDATED);
+    }
+
+    void updateBookmark() {
+        if (getURL() == null) {
+            return;
+        }
+
+        ThreadUtils.postToBackgroundThread(new Runnable() {
+            @Override
+            public void run() {
+                final String url = getURL();
+                if (url == null) {
+                    return;
+                }
+
+                final int flags = BrowserDB.getItemFlags(getContentResolver(), url);
+                mBookmark = (flags & Bookmarks.FLAG_BOOKMARK) > 0;
+                mReadingListItem = (flags & Bookmarks.FLAG_READING) > 0;
+                Tabs.getInstance().notifyListeners(Tab.this, Tabs.TabEvents.MENU_UPDATED);
+            }
+        });
+    }
+
+    public void addBookmark() {
+        ThreadUtils.postToBackgroundThread(new Runnable() {
+            @Override
+            public void run() {
+                String url = getURL();
+                if (url == null)
+                    return;
+
+                BrowserDB.addBookmark(getContentResolver(), mTitle, url);
+            }
+        });
+    }
+
+    public void removeBookmark() {
+        ThreadUtils.postToBackgroundThread(new Runnable() {
+            @Override
+            public void run() {
+                String url = getURL();
+                if (url == null)
+                    return;
+
+                BrowserDB.removeBookmarksWithURL(getContentResolver(), url);
+            }
+        });
+    }
+
+    public void addToReadingList() {
+        if (!mReaderEnabled)
+            return;
+
+        JSONObject json = new JSONObject();
+        try {
+            json.put("tabID", String.valueOf(getId()));
+        } catch (JSONException e) {
+            Log.e(LOGTAG, "JSON error - failing to add to reading list", e);
+            return;
+        }
+
+        GeckoEvent e = GeckoEvent.createBroadcastEvent("Reader:Add", json.toString());
+        GeckoAppShell.sendEventToGecko(e);
+    }
+
+    public void toggleReaderMode() {
+        if (AboutPages.isAboutReader(mUrl)) {
+            Tabs.getInstance().loadUrl(ReaderModeUtils.getUrlFromAboutReader(mUrl));
+        } else if (mReaderEnabled) {
+            mEnteringReaderMode = true;
+            Tabs.getInstance().loadUrl(ReaderModeUtils.getAboutReaderForUrl(mUrl, mId));
+        }
+    }
+
+    public boolean isEnteringReaderMode() {
+        return mEnteringReaderMode;
+    }
+
+    public void doReload() {
+        GeckoEvent e = GeckoEvent.createBroadcastEvent("Session:Reload", "");
+        GeckoAppShell.sendEventToGecko(e);
+    }
+
+    // Our version of nsSHistory::GetCanGoBack
+    public boolean canDoBack() {
+        return mHistoryIndex > 0;
+    }
+
+    public boolean doBack() {
+        if (!canDoBack())
+            return false;
+
+        GeckoEvent e = GeckoEvent.createBroadcastEvent("Session:Back", "");
+        GeckoAppShell.sendEventToGecko(e);
+        return true;
+    }
+
+    public boolean showBackHistory() {
+        if (!canDoBack())
+            return false;
+        return this.showHistory(Math.max(mHistoryIndex - MAX_HISTORY_LIST_SIZE, 0), mHistoryIndex, mHistoryIndex);
+    }
+
+    public boolean showForwardHistory() {
+        if (!canDoForward())
+            return false;
+        return this.showHistory(mHistoryIndex, Math.min(mHistorySize - 1, mHistoryIndex + MAX_HISTORY_LIST_SIZE), mHistoryIndex);
+    }
+
+    public boolean showAllHistory() {
+        if (!canDoForward() && !canDoBack())
+            return false;
+
+        int min = mHistoryIndex - MAX_HISTORY_LIST_SIZE / 2;
+        int max = mHistoryIndex + MAX_HISTORY_LIST_SIZE / 2;
+        if (min < 0) {
+            max -= min;
+        }
+        if (max > mHistorySize - 1) {
+            min -= max - (mHistorySize - 1);
+            max = mHistorySize - 1;
+        }
+        min = Math.max(min, 0);
+
+        return this.showHistory(min, max, mHistoryIndex);
+    }
+
+    /**
+     * This method will show the history starting on fromIndex until toIndex of the history.
+     */
+    public boolean showHistory(int fromIndex, int toIndex, int selIndex) {
+        JSONObject json = new JSONObject();
+        try {
+            json.put("fromIndex", fromIndex);
+            json.put("toIndex", toIndex);
+            json.put("selIndex", selIndex);
+        } catch (JSONException e) {
+            Log.e(LOGTAG, "JSON error", e);
+        }
+        GeckoEvent e = GeckoEvent.createBroadcastEvent("Session:ShowHistory", json.toString());
+        GeckoAppShell.sendEventToGecko(e);
+        return true;
+    }
+
+    public void doStop() {
+        GeckoEvent e = GeckoEvent.createBroadcastEvent("Session:Stop", "");
+        GeckoAppShell.sendEventToGecko(e);
+    }
+
+    // Our version of nsSHistory::GetCanGoForward
+    public boolean canDoForward() {
+        return mHistoryIndex < mHistorySize - 1;
+    }
+
+    public boolean doForward() {
+        if (!canDoForward())
+            return false;
+
+        GeckoEvent e = GeckoEvent.createBroadcastEvent("Session:Forward", "");
+        GeckoAppShell.sendEventToGecko(e);
+        return true;
+    }
+
+    void handleSessionHistoryMessage(String event, JSONObject message) throws JSONException {
+        if (event.equals("New")) {
+            final String url = message.getString("url");
+            mHistoryIndex++;
+            mHistorySize = mHistoryIndex + 1;
+        } else if (event.equals("Back")) {
+            if (!canDoBack()) {
+                Log.w(LOGTAG, "Received unexpected back notification");
+                return;
+            }
+            mHistoryIndex--;
+        } else if (event.equals("Forward")) {
+            if (!canDoForward()) {
+                Log.w(LOGTAG, "Received unexpected forward notification");
+                return;
+            }
+            mHistoryIndex++;
+        } else if (event.equals("Goto")) {
+            int index = message.getInt("index");
+            if (index < 0 || index >= mHistorySize) {
+                Log.w(LOGTAG, "Received unexpected history-goto notification");
+                return;
+            }
+            mHistoryIndex = index;
+        } else if (event.equals("Purge")) {
+            int numEntries = message.getInt("numEntries");
+            if (numEntries > mHistorySize) {
+                Log.w(LOGTAG, "Received unexpectedly large number of history entries to purge");
+                mHistoryIndex = -1;
+                mHistorySize = 0;
+                return;
+            }
+
+            mHistorySize -= numEntries;
+            mHistoryIndex -= numEntries;
+
+            // If we weren't at the last history entry, mHistoryIndex may have become too small
+            if (mHistoryIndex < -1)
+                mHistoryIndex = -1;
+        }
+    }
+
+    void handleLocationChange(JSONObject message) throws JSONException {
+        final String uri = message.getString("uri");
+        final String oldUrl = getURL();
+        final boolean sameDocument = message.getBoolean("sameDocument");
+        mEnteringReaderMode = ReaderModeUtils.isEnteringReaderMode(oldUrl, uri);
+
+        if (!TextUtils.equals(oldUrl, uri)) {
+            updateURL(uri);
+            updateBookmark();
+            if (!sameDocument) {
+                // We can unconditionally clear the favicon and title here: we
+                // already filtered both cases in which this was a (pseudo-)
+                // spurious location change, so we're definitely loading a new
+                // page.
+                clearFavicon();
+                updateTitle(null);
+            }
+        }
+
+        if (sameDocument) {
+            // We can get a location change event for the same document with an anchor tag
+            // Notify listeners so that buttons like back or forward will update themselves
+            Tabs.getInstance().notifyListeners(this, Tabs.TabEvents.LOCATION_CHANGE, oldUrl);
+            return;
+        }
+
+        setContentType(message.getString("contentType"));
+        updateUserSearch(message.getString("userSearch"));
+        mBaseDomain = message.optString("baseDomain");
+
+        setHasFeeds(false);
+        setHasOpenSearch(false);
+        updateIdentityData(null);
+        setReaderEnabled(false);
+        setZoomConstraints(new ZoomConstraints(true));
+        setHasTouchListeners(false);
+        setBackgroundColor(DEFAULT_BACKGROUND_COLOR);
+        setErrorType(ErrorType.NONE);
+        setLoadProgressIfLoading(LOAD_PROGRESS_LOCATION_CHANGE);
+
+        Tabs.getInstance().notifyListeners(this, Tabs.TabEvents.LOCATION_CHANGE, oldUrl);
+    }
+
+    private static boolean shouldShowProgress(final String url) {
+        return !AboutPages.isAboutPage(url);
+    }
+
+    void handleDocumentStart(boolean restoring, String url) {
+        setLoadProgress(LOAD_PROGRESS_START);
+        setState((!restoring && shouldShowProgress(url)) ? STATE_LOADING : STATE_SUCCESS);
+        updateIdentityData(null);
+        setReaderEnabled(false);
+    }
+
+    void handleDocumentStop(boolean success) {
+        setState(success ? STATE_SUCCESS : STATE_ERROR);
+
+        final String oldURL = getURL();
+        final Tab tab = this;
+        tab.setLoadProgress(LOAD_PROGRESS_STOP);
+        ThreadUtils.getBackgroundHandler().postDelayed(new Runnable() {
+            @Override
+            public void run() {
+                // tab.getURL() may return null
+                if (!TextUtils.equals(oldURL, getURL()))
+                    return;
+
+                ThumbnailHelper.getInstance().getAndProcessThumbnailFor(tab);
+            }
+        }, 500);
+    }
+
+    void handleContentLoaded() {
+        setLoadProgressIfLoading(LOAD_PROGRESS_LOADED);
+    }
+
+    protected void saveThumbnailToDB() {
+        final BitmapDrawable thumbnail = mThumbnail;
+        if (thumbnail == null) {
+            return;
+        }
+
+        try {
+            String url = getURL();
+            if (url == null) {
+                return;
+            }
+
+            BrowserDB.updateThumbnailForUrl(getContentResolver(), url, thumbnail);
+        } catch (Exception e) {
+            // ignore
+        }
+    }
+
+    public void addPluginView(View view) {
+        mPluginViews.add(view);
+    }
+
+    public void removePluginView(View view) {
+        mPluginViews.remove(view);
+    }
+
+    public View[] getPluginViews() {
+        return mPluginViews.toArray(new View[mPluginViews.size()]);
+    }
+
+    public void addPluginLayer(Object surfaceOrView, Layer layer) {
+        synchronized(mPluginLayers) {
+            mPluginLayers.put(surfaceOrView, layer);
+        }
+    }
+
+    public Layer getPluginLayer(Object surfaceOrView) {
+        synchronized(mPluginLayers) {
+            return mPluginLayers.get(surfaceOrView);
+        }
+    }
+
+    public Collection<Layer> getPluginLayers() {
+        synchronized(mPluginLayers) {
+            return new ArrayList<Layer>(mPluginLayers.values());
+        }
+    }
+
+    public Layer removePluginLayer(Object surfaceOrView) {
+        synchronized(mPluginLayers) {
+            return mPluginLayers.remove(surfaceOrView);
+        }
+    }
+
+    public int getBackgroundColor() {
+        return mBackgroundColor;
+    }
+
+    /** Sets a new color for the background. */
+    public void setBackgroundColor(int color) {
+        mBackgroundColor = color;
+    }
+
+    /** Parses and sets a new color for the background. */
+    public void setBackgroundColor(String newColor) {
+        setBackgroundColor(parseColorFromGecko(newColor));
+    }
+
+    // Parses a color from an RGB triple of the form "rgb([0-9]+, [0-9]+, [0-9]+)". If the color
+    // cannot be parsed, returns white.
+    private static int parseColorFromGecko(String string) {
+        if (sColorPattern == null) {
+            sColorPattern = Pattern.compile("rgb\\((\\d+),\\s*(\\d+),\\s*(\\d+)\\)");
+        }
+
+        Matcher matcher = sColorPattern.matcher(string);
+        if (!matcher.matches()) {
+            return Color.WHITE;
+        }
+
+        int r = Integer.parseInt(matcher.group(1));
+        int g = Integer.parseInt(matcher.group(2));
+        int b = Integer.parseInt(matcher.group(3));
+        return Color.rgb(r, g, b);
+    }
+
+    public void setDesktopMode(boolean enabled) {
+        mDesktopMode = enabled;
+    }
+
+    public boolean getDesktopMode() {
+        return mDesktopMode;
+    }
+
+    public boolean isPrivate() {
+        return false;
+    }
+
+    /**
+     * Sets the tab load progress to the given percentage.
+     *
+     * @param progressPercentage Percentage to set progress to (0-100)
+     */
+    void setLoadProgress(int progressPercentage) {
+        mLoadProgress = progressPercentage;
+    }
+
+    /**
+     * Sets the tab load progress to the given percentage only if the tab is
+     * currently loading.
+     *
+     * about:neterror can trigger a STOP before other page load events (bug
+     * 976426), so any post-START events should make sure the page is loading
+     * before updating progress.
+     *
+     * @param progressPercentage Percentage to set progress to (0-100)
+     */
+    void setLoadProgressIfLoading(int progressPercentage) {
+        if (getState() == STATE_LOADING) {
+            setLoadProgress(progressPercentage);
+        }
+    }
+
+    /**
+     * Gets the tab load progress percentage.
+     *
+     * @return Current progress percentage
+     */
+    public int getLoadProgress() {
+        return mLoadProgress;
+    }
+
+    public void setRecording(boolean isRecording) {
+        if (isRecording) {
+            mRecordingCount++;
+        } else {
+            mRecordingCount--;
+        }
+    }
+
+    public boolean isRecording() {
+        return mRecordingCount > 0;
+    }
+}