cc: Dedup IPCs to return resources to client

content/browser/renderer_host/render_widget_host_view_mac.mm

 // 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.
 
 #include "content/browser/renderer_host/render_widget_host_view_mac.h"
 
 #import <objc/runtime.h>
 #include <OpenGL/gl.h>
 #include <QuartzCore/QuartzCore.h>
 #include <stdint.h>
@@ skipping 402 matching lines @@
   // When making an element on the page fullscreen the element's background
   // may not match the page's, so use black as the gutter color to avoid
   // flashes of brighter colors during the transition.
   if (render_widget_host_->delegate() &&
       render_widget_host_->delegate()->IsFullscreenForCurrentTab()) {
     return SK_ColorBLACK;
   }
   return color;
 }
 
-void RenderWidgetHostViewMac::BrowserCompositorMacSendCompositorSwapAck(
-    int output_surface_id,
-    const cc::CompositorFrameAck& ack) {
-  render_widget_host_->Send(new ViewMsg_SwapCompositorFrameAck(
-      render_widget_host_->GetRoutingID(), output_surface_id, ack));
-}
-
 void RenderWidgetHostViewMac::
     BrowserCompositorMacSendReclaimCompositorResources(
         int output_surface_id,
-        const cc::CompositorFrameAck& ack) {
+        bool is_swap_ack,
+        const cc::ReturnedResourceArray& resources) {
   render_widget_host_->Send(new ViewMsg_ReclaimCompositorResources(
-      render_widget_host_->GetRoutingID(), output_surface_id, ack));
+      render_widget_host_->GetRoutingID(), output_surface_id, is_swap_ack,
+      resources));
 }
 
 void RenderWidgetHostViewMac::BrowserCompositorMacOnLostCompositorResources() {
   render_widget_host_->ScheduleComposite();
 }
 
 void RenderWidgetHostViewMac::BrowserCompositorMacUpdateVSyncParameters(
     const base::TimeTicks& timebase,
     const base::TimeDelta& interval) {
   render_widget_host_->UpdateVSyncParameters(timebase, interval);
@@ skipping 2786 matching lines @@
 
 // "-webkit-app-region: drag | no-drag" is implemented on Mac by excluding
 // regions that are not draggable. (See ControlRegionView in
 // native_app_window_cocoa.mm). This requires the render host view to be
 // draggable by default.
 - (BOOL)mouseDownCanMoveWindow {
   return YES;
 }
 
 @end