Remove surface_id from RenderWidget/RenderWidgetHost and friends

content/common/frame_messages.h

 // Copyright 2013 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 interacting with frames.
 // Multiply-included message file, hence no include guard.
 
 #include "cc/surfaces/surface_id.h"
 #include "cc/surfaces/surface_sequence.h"
 #include "content/common/content_export.h"
@@ skipping 302 matching lines @@
   IPC_STRUCT_TRAITS_MEMBER(sandbox_flags)
   IPC_STRUCT_TRAITS_MEMBER(name)
 IPC_STRUCT_TRAITS_END()
 
 IPC_STRUCT_BEGIN(FrameMsg_NewFrame_WidgetParams)
   // Gives the routing ID for the RenderWidget that will be attached to the
   // new RenderFrame. If the RenderFrame does not need a RenderWidget, this
   // is MSG_ROUTING_NONE and the other parameters are not read.
   IPC_STRUCT_MEMBER(int, routing_id)
 
-  // Identifier for the output surface for the new RenderWidget.
-  IPC_STRUCT_MEMBER(int, surface_id)
-
   // Tells the new RenderWidget whether it is initially hidden.
   IPC_STRUCT_MEMBER(bool, hidden)
 IPC_STRUCT_END()
 
 IPC_STRUCT_BEGIN(FrameMsg_NewFrame_Params)
   // Specifies the routing ID of the new RenderFrame object.
   IPC_STRUCT_MEMBER(int, routing_id)
 
   // If a valid |proxy_routing_id| is provided, the new frame will be
   // configured to replace the proxy on commit.
@@ skipping 844 matching lines @@
 IPC_MESSAGE_ROUTED1(FrameHostMsg_ShowPopup,
                     FrameHostMsg_ShowPopup_Params)
 IPC_MESSAGE_ROUTED0(FrameHostMsg_HidePopup)
 
 #endif
 
 // Adding a new message? Stick to the sort order above: first platform
 // independent FrameMsg, then ifdefs for platform specific FrameMsg, then
 // platform independent FrameHostMsg, then ifdefs for platform specific
 // FrameHostMsg.