[WIP Approach 1] Straighten up input method reactivation

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 <stddef.h>
 #include <stdint.h>
 
@@ skipping 269 matching lines @@
   IPC_STRUCT_TRAITS_MEMBER(flags)
   IPC_STRUCT_TRAITS_MEMBER(value)
   IPC_STRUCT_TRAITS_MEMBER(selection_start)
   IPC_STRUCT_TRAITS_MEMBER(selection_end)
   IPC_STRUCT_TRAITS_MEMBER(composition_start)
   IPC_STRUCT_TRAITS_MEMBER(composition_end)
   IPC_STRUCT_TRAITS_MEMBER(can_compose_inline)
   IPC_STRUCT_TRAITS_MEMBER(show_ime_if_needed)
   IPC_STRUCT_TRAITS_MEMBER(is_non_ime_change)
   IPC_STRUCT_TRAITS_MEMBER(batch_edit)
+  IPC_STRUCT_TRAITS_MEMBER(requires_ack)
 IPC_STRUCT_TRAITS_END()
 
 IPC_STRUCT_BEGIN(ViewHostMsg_CreateWorker_Params)
   // URL for the worker script.
   IPC_STRUCT_MEMBER(GURL, url)
 
   // Name for a SharedWorker, otherwise empty string.
   IPC_STRUCT_MEMBER(base::string16, name)
 
   // Security policy used in the worker.
@@ skipping 645 matching lines @@
                     int /* y */)
 
 #elif defined(OS_MACOSX)
 // Receives content of a web page as plain text.
 IPC_MESSAGE_ROUTED1(ViewMsg_GetRenderedTextCompleted, std::string)
 #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.