Get rid of gpu_messages.h include in chrome by having the RenderWidgetHostView implementation ask...

content/browser/renderer_host/render_widget_host.cc

 // Copyright (c) 2011 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.
 
 #include "content/browser/renderer_host/render_widget_host.h"
 
 #include "base/auto_reset.h"
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/debug/trace_event.h"
 #include "base/i18n/rtl.h"
 #include "base/message_loop.h"
 #include "base/metrics/histogram.h"
 #include "base/utf_string_conversions.h"
 #include "content/browser/accessibility/browser_accessibility_state.h"
 #include "content/browser/gpu/gpu_process_host.h"
+#include "content/browser/gpu/gpu_process_host_ui_shim.h"
 #include "content/browser/renderer_host/backing_store.h"
 #include "content/browser/renderer_host/backing_store_manager.h"
 #include "content/browser/renderer_host/render_process_host_impl.h"
 #include "content/browser/renderer_host/render_widget_helper.h"
 #include "content/browser/renderer_host/render_widget_host_view.h"
 #include "content/browser/user_metrics.h"
 #include "content/common/gpu/gpu_messages.h"
 #include "content/public/browser/notification_service.h"
 #include "content/common/view_messages.h"
 #include "content/public/browser/native_web_keyboard_event.h"
@@ skipping 1442 matching lines @@
     pending_mouse_lock_request_ = false;
     if (!view_ || !view_->HasFocus()|| !view_->LockMouse()) {
       Send(new ViewMsg_LockMouse_ACK(routing_id_, false));
       return false;
     } else {
       Send(new ViewMsg_LockMouse_ACK(routing_id_, true));
       return true;
     }
   }
 }
+
+#if defined(OS_MACOSX) || defined(UI_COMPOSITOR_IMAGE_TRANSPORT)
+void RenderWidgetHost::AcknowledgeSwapBuffers(int32 route_id, int gpu_host_id) {
+  GpuProcessHostUIShim* ui_shim = GpuProcessHostUIShim::FromID(gpu_host_id);
+  if (ui_shim)
+    ui_shim->Send(new AcceleratedSurfaceMsg_BuffersSwappedACK(route_id));
+}
+#endif