diff -r 000000000000 -r 6474c204b198 mobile/android/base/sync/setup/activities/ActivityUtils.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mobile/android/base/sync/setup/activities/ActivityUtils.java	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,139 @@
+/* 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.sync.setup.activities;
+
+import java.util.Locale;
+
+import org.mozilla.gecko.background.common.GlobalConstants;
+import org.mozilla.gecko.background.common.log.Logger;
+import org.mozilla.gecko.sync.SyncConstants;
+import org.mozilla.gecko.sync.setup.InvalidSyncKeyException;
+
+import android.content.Context;
+import android.content.Intent;
+import android.net.Uri;
+import android.text.Html;
+import android.text.SpannableString;
+import android.text.Spanned;
+import android.text.TextPaint;
+import android.text.method.LinkMovementMethod;
+import android.text.style.ClickableSpan;
+import android.text.style.URLSpan;
+import android.view.View;
+import android.widget.TextView;
+
+public class ActivityUtils {
+  private static final String LOG_TAG = "ActivityUtils";
+
+  public static void prepareLogging() {
+    Logger.setThreadLogTag(SyncConstants.GLOBAL_LOG_TAG);
+  }
+
+  /**
+   * Sync key should be a 26-character string, and can include arbitrary
+   * capitalization and hyphenation.
+   *
+   * @param key
+   *          Sync key entered by user in account setup.
+   * @return Sync key in correct format (lower-case, no hyphens).
+   * @throws InvalidSyncKeyException
+   */
+  public static String validateSyncKey(String key) throws InvalidSyncKeyException {
+    String charKey = key.trim().replace("-", "").toLowerCase(Locale.US);
+    if (!charKey.matches("^[abcdefghijkmnpqrstuvwxyz23456789]{26}$")) {
+      throw new InvalidSyncKeyException();
+    }
+    return charKey;
+  }
+
+  /**
+   * Open a URL in Fennec, if one is provided; or just open Fennec.
+   *
+   * @param context Android context.
+   * @param url to visit, or null to just open Fennec.
+   */
+  public static void openURLInFennec(final Context context, final String url) {
+    Intent intent;
+    if (url != null) {
+      intent = new Intent(Intent.ACTION_VIEW);
+      intent.setData(Uri.parse(url));
+    } else {
+      intent = new Intent(Intent.ACTION_MAIN);
+    }
+    intent.setClassName(GlobalConstants.BROWSER_INTENT_PACKAGE, GlobalConstants.BROWSER_INTENT_CLASS);
+    intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
+    context.startActivity(intent);
+  }
+
+  /**
+   * Open a clicked span in Fennec with the provided URL.
+   */
+  public static class FennecClickableSpan extends ClickableSpan {
+    private final String url;
+    private final boolean underlining;
+
+    public FennecClickableSpan(final String url, boolean underlining) {
+      this.url = url;
+      this.underlining = underlining;
+    }
+
+    @Override
+    public void updateDrawState(TextPaint ds) {
+      super.updateDrawState(ds);
+      if (!this.underlining) {
+        ds.setUnderlineText(false);
+      }
+    }
+
+    @Override
+    public void onClick(View widget) {
+      openURLInFennec(widget.getContext(), this.url);
+    }
+  }
+
+  /**
+   * Replace the contents of a plain text view with the provided text wrapped in a link.
+   * TODO: escape the URL!
+   */
+  public static void linkTextView(TextView view, int text, int link) {
+    final Context context = view.getContext();
+    linkTextView(view, context.getString(text), context.getString(link));
+  }
+
+  /**
+   * Replace the contents of a plain text view with the provided text wrapped in a link.
+   * TODO: escape the URL!
+   */
+  public static void linkTextView(TextView view, String text, String url) {
+    view.setText("<a href=\"" + url + "\">" + text + "</a>");
+    linkifyTextView(view, false);
+  }
+
+  public static void linkifyTextView(TextView textView, boolean underlining) {
+    if (textView == null) {
+      Logger.warn(LOG_TAG, "Could not process links for view.");
+      return;
+    }
+
+    textView.setMovementMethod(LinkMovementMethod.getInstance());
+
+    // Create spans.
+    final Spanned spanned = Html.fromHtml(textView.getText().toString());
+
+    // Replace the spans with Fennec-launching links.
+    SpannableString replaced = new SpannableString(spanned);
+    URLSpan[] spans = replaced.getSpans(0, replaced.length(), URLSpan.class);
+    for (URLSpan span : spans) {
+      final int start = replaced.getSpanStart(span);
+      final int end = replaced.getSpanEnd(span);
+      final int flags = replaced.getSpanFlags(span);
+
+      replaced.removeSpan(span);
+      replaced.setSpan(new FennecClickableSpan(span.getURL(), underlining), start, end, flags);
+    }
+
+    textView.setText(replaced);
+  }
+}