Browser plugin: Implement titleChanged event.

content/common/browser_plugin_messages.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.
 
 // Multiply-included message header, no traditional include guard.
 
 #include <string>
 
 #include "base/basictypes.h"
 #include "base/process.h"
@@ skipping 144 matching lines @@
                      GURL /* new_url */,
                      bool /* is_top_level */)
 
 // When the guest navigates, the browser process informs the embedder through
 // the BrowserPluginMsg_DidNavigate message.
 IPC_MESSAGE_CONTROL3(BrowserPluginMsg_DidNavigate,
                      int /* instance_id */,
                      GURL /* url */,
                      int /* process_id */)
 
+// When the guest changes its title, the browser process informs the
+// embedder through the BrowserPluginMsg_TitleChanged message.
+IPC_MESSAGE_CONTROL2(BrowserPluginMsg_TitleChanged,
+                     int /* instance_id */,
+                     string16 /* title */)
+
 // When the guest crashes, the browser process informs the embedder through this
 // message.
 IPC_MESSAGE_CONTROL1(BrowserPluginMsg_GuestCrashed,
                      int /* instance_id */)
 
 IPC_STRUCT_BEGIN(BrowserPluginMsg_UpdateRect_Params)
   // The position and size of the bitmap.
   IPC_STRUCT_MEMBER(gfx::Rect, bitmap_rect)
 
   // The scroll offset.  Only one of these can be non-zero, and if they are
@@ skipping 38 matching lines @@
 IPC_MESSAGE_CONTROL2(BrowserPluginMsg_ShouldAcceptTouchEvents,
                      int /* instance_id */,
                      bool /* accept */)
 
 // The guest has damage it wants to convey to the embedder so that it can
 // update its backing store.
 IPC_MESSAGE_CONTROL3(BrowserPluginMsg_UpdateRect,
                      int /* instance_id */,
                      int /* message_id */,
                      BrowserPluginMsg_UpdateRect_Params)