Add |needs_resize_ack| flag to ViewMsg_Resize

content/common/view_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.
 
 // IPC messages for page rendering.
 // Multiply-included message file, hence no include guard.
 
 #include "base/memory/shared_memory.h"
 #include "base/process/process.h"
 #include "base/strings/string16.h"
@@ skipping 428 matching lines @@
   // isn't supported).
   IPC_STRUCT_MEMBER(float, top_controls_height)
   // The size of the visible viewport, which may be smaller than the view if the
   // view is partially occluded (e.g. by a virtual keyboard).  The size is in
   // DPI-adjusted pixels.
   IPC_STRUCT_MEMBER(gfx::Size, visible_viewport_size)
   // The resizer rect.
   IPC_STRUCT_MEMBER(gfx::Rect, resizer_rect)
   // Indicates whether a page is fullscreen or not.
   IPC_STRUCT_MEMBER(bool, is_fullscreen)
+  // If set, requests the renderer to reply with a ViewHostMsg_UpdateRect
+  // with the ViewHostMsg_UpdateRect_Flags::IS_RESIZE_ACK bit set in flags.
+  IPC_STRUCT_MEMBER(bool, needs_resize_ack)
 IPC_STRUCT_END()
 
 IPC_STRUCT_BEGIN(ViewMsg_New_Params)
   // Renderer-wide preferences.
   IPC_STRUCT_MEMBER(content::RendererPreferences, renderer_preferences)
 
   // Preferences for this view.
   IPC_STRUCT_MEMBER(content::WebPreferences, web_preferences)
 
   // The ID of the view to be created.
@@ skipping 1192 matching lines @@
 // cached by the OS. Please see RenderMessageFilter::OnPreCacheFontCharacters
 // for details.
 IPC_SYNC_MESSAGE_CONTROL2_0(ViewHostMsg_PreCacheFontCharacters,
                             LOGFONT /* font_data */,
                             base::string16 /* characters */)
 #endif
 
 // Adding a new message? Stick to the sort order above: first platform
 // independent ViewMsg, then ifdefs for platform specific ViewMsg, then platform
 // independent ViewHostMsg, then ifdefs for platform specific ViewHostMsg.