Browser plugin: Implement titleChanged event.

content/renderer/browser_plugin/browser_plugin.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef  CONTENT_RENDERER_BROWSER_PLUGIN_BROWSER_PLUGIN_H_
 #define  CONTENT_RENDERER_BROWSER_PLUGIN_BROWSER_PLUGIN_H_
 
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebPlugin.h"
 
 #include "base/memory/scoped_ptr.h"
@@ skipping 56 matching lines @@
   // Inform the BrowserPlugin that the guest has started loading a new page.
   void LoadStart(const GURL& url, bool is_top_level);
   // Inform the BrowserPlugin that the guest has finished loading a new page.
   void LoadStop();
   // Inform the BrowserPlugin that the guest has aborted loading a new page.
   void LoadAbort(const GURL& url, bool is_top_level, const std::string& type);
   // Inform the BrowserPlugin that the guest has redirected a navigation.
   void LoadRedirect(const GURL& old_url,
                     const GURL& new_url,
                     bool is_top_level);
+  // Inform the BrowserPlugin that the guest has changed its title.
+  void TitleChange(const string16& title);
   // Tells the BrowserPlugin to advance the focus to the next (or previous)
   // element.
   void AdvanceFocus(bool reverse);
 
   // Inform the BrowserPlugin that the guest's contentWindow is ready,
   // and provide it with a routing ID to grab it.
   void GuestContentWindowReady(int content_window_routing_id);
 
   // Informs the BrowserPlugin that the guest has started/stopped accepting
   // touch events.
@@ skipping 164 matching lines @@
   // the changes are not always obvious.  For example, there is a maximum
   // number of entries and earlier ones will automatically be pruned.
   int current_nav_entry_index_;
   int nav_entry_count_;
   DISALLOW_COPY_AND_ASSIGN(BrowserPlugin);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_BROWSER_PLUGIN_BROWSER_PLUGIN_H_