<webview>: Fix resize.

content/common/browser_plugin/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/memory/shared_memory.h"
@@ skipping 26 matching lines @@
 IPC_ENUM_TRAITS(BrowserPluginPermissionType)
 IPC_ENUM_TRAITS(WebKit::WebDragStatus)
 
 IPC_STRUCT_BEGIN(BrowserPluginHostMsg_AutoSize_Params)
   IPC_STRUCT_MEMBER(bool, enable)
   IPC_STRUCT_MEMBER(gfx::Size, max_size)
   IPC_STRUCT_MEMBER(gfx::Size, min_size)
 IPC_STRUCT_END()
 
 IPC_STRUCT_BEGIN(BrowserPluginHostMsg_ResizeGuest_Params)
+  // Indicates whether the parameters have been populated or not.
+  IPC_STRUCT_MEMBER(bool, size_changed)
   // The sequence number used to uniquely identify the damage buffer for the
   // current container size.
   IPC_STRUCT_MEMBER(uint32, damage_buffer_sequence_id)
   // The handle to use to map the damage buffer in the browser process.
   IPC_STRUCT_MEMBER(base::SharedMemoryHandle, damage_buffer_handle)
   // The size of the damage buffer.
   IPC_STRUCT_MEMBER(size_t, damage_buffer_size)
   // The new rect of the guest view area.
   IPC_STRUCT_MEMBER(gfx::Rect, view_rect)
   // Indicates the scale factor of the embedder WebView.
@@ skipping 320 matching lines @@
                      int /* instance_id */,
                      BrowserPluginPermissionType /* permission_type */,
                      int /* request_id */,
                      base::DictionaryValue /* request_info */)
 
 // Forwards a PointerLock Unlock request to the BrowserPlugin.
 IPC_MESSAGE_CONTROL2(BrowserPluginMsg_SetMouseLock,
                      int /* instance_id */,
                      bool /* enable */)