Require ACK for editor-related changes not originating from browser.

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 511 matching lines @@
   // The end position of the current composition, or -1 if there is none
   IPC_STRUCT_MEMBER(int, composition_end)
 
   // Whether or not inline composition can be performed for the current input.
   IPC_STRUCT_MEMBER(bool, can_compose_inline)
 
   // Whether or not the IME should be shown as a result of this update. Even if
   // true, the IME will only be shown if the type is appropriate (e.g. not
   // TEXT_INPUT_TYPE_NONE).
   IPC_STRUCT_MEMBER(bool, show_ime_if_needed)
+
+  // Whether an acknowledgement is required for this update.
+  IPC_STRUCT_MEMBER(bool, require_ack)
 IPC_STRUCT_END()
 
 IPC_STRUCT_BEGIN(ViewHostMsg_UpdateRect_Params)
   // The bitmap to be painted into the view at the locations specified by
   // update_rects.
   IPC_STRUCT_MEMBER(TransportDIB::Id, bitmap)
 
   // The position and size of the bitmap.
   IPC_STRUCT_MEMBER(gfx::Rect, bitmap_rect)
 
@@ skipping 755 matching lines @@
                     bool /* enable_hiding */,
                     bool /* enable_showing */,
                     bool /* animate */)
 
 IPC_MESSAGE_ROUTED0(ViewMsg_ShowImeIfNeeded)
 
 // Sent by the browser when the renderer should generate a new frame.
 IPC_MESSAGE_ROUTED1(ViewMsg_BeginFrame,
                     cc::BeginFrameArgs /* args */)
 
+// Sent by the browser when an IME update that requires acknowledgement has been
+// processed on the browser side.
+IPC_MESSAGE_ROUTED0(ViewMsg_ImeEventAck)
+
 #elif defined(OS_MACOSX)
 // Let the RenderView know its window has changed visibility.
 IPC_MESSAGE_ROUTED1(ViewMsg_SetWindowVisibility,
                     bool /* visibile */)
 
 // Let the RenderView know its window's frame has changed.
 IPC_MESSAGE_ROUTED2(ViewMsg_WindowFrameChanged,
                     gfx::Rect /* window frame */,
                     gfx::Rect /* content view frame */)
 
@@ skipping 1039 matching lines @@
 // synchronously (see crbug.com/120597). This IPC message sends the character
 // bounds after every composition change to always have correct bound info.
 IPC_MESSAGE_ROUTED2(ViewHostMsg_ImeCompositionRangeChanged,
                     ui::Range /* composition range */,
                     std::vector<gfx::Rect> /* character bounds */)
 #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.