diff -r 000000000000 -r 6474c204b198 embedding/base/nsIWindowCreator2.idl
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/embedding/base/nsIWindowCreator2.idl	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,58 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ *
+ * 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/. */
+
+/**
+ * nsIWindowCreator2 is an extension of nsIWindowCreator which allows
+ * additional information about the context of the window creation to
+ * be passed.
+ *
+ * @see nsIWindowCreator
+ * @see nsIWindowWatcher
+ *
+ * @status
+ */
+
+#include "nsIWindowCreator.idl"
+
+interface nsIURI;
+interface nsIWebBrowserChrome;
+
+[scriptable, uuid(f673ec81-a4b0-11d6-964b-eb5a2bf216fc)]
+
+interface nsIWindowCreator2 : nsIWindowCreator {
+
+  /**
+   * Definitions for contextFlags
+   */
+
+  // Likely that the window is an advertising popup. 
+  const unsigned long PARENT_IS_LOADING_OR_RUNNING_TIMEOUT = 0x00000001;
+
+  /** Create a new window. Gecko will/may call this method, if made
+      available to it, to create new windows.
+      @param parent Parent window, if any. Null if not. The newly created
+                    window should be made a child/dependent window of
+                    the parent, if any (and if the concept applies
+                    to the underlying OS).
+      @param chromeFlags Chrome features from nsIWebBrowserChrome
+      @param contextFlags Flags about the context of the window being created.
+      @param uri The URL for which this window is intended. It can be null
+                 or zero-length. The implementation of this interface
+                 may use the URL to help determine what sort of window
+                 to open or whether to cancel window creation. It will not
+                 load the URL.
+      @param cancel Return |true| to reject window creation. If true the
+                    implementation has determined the window should not
+                    be created at all. The caller should not default
+                    to any possible backup scheme for creating the window.
+      @return the new window. Will be null if canceled or an error occurred.
+  */
+  nsIWebBrowserChrome createChromeWindow2(in nsIWebBrowserChrome parent,
+                                          in uint32_t chromeFlags,
+                                          in uint32_t contextFlags,
+                                          in nsIURI uri,
+                                          out boolean cancel);
+};