Let every "accelerated IO surface swapped" message have an identifier of the surface.

chrome/browser/renderer_host/render_widget_host_view_mac.mm

 // Copyright (c) 2010 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 <QuartzCore/QuartzCore.h>
 
 #include "chrome/browser/renderer_host/render_widget_host_view_mac.h"
 
 #include "app/app_switches.h"
 #include "app/surface/io_surface_support_mac.h"
@@ skipping 895 matching lines @@
     int32 height,
     TransportDIB::Handle transport_dib) {
   CHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
   plugin_container_manager_.SetSizeAndTransportDIB(window,
                                                    width,
                                                    height,
                                                    transport_dib);
 }
 
 void RenderWidgetHostViewMac::AcceleratedSurfaceBuffersSwapped(
-    gfx::PluginWindowHandle window) {
+    gfx::PluginWindowHandle window, uint64 surface_id) {
   CHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
   PluginViewMap::iterator it = plugin_views_.find(window);
   DCHECK(plugin_views_.end() != it);
   if (plugin_views_.end() == it) {
     return;
   }
   DCHECK([it->second isKindOfClass:[AcceleratedPluginView class]]);
 
-  plugin_container_manager_.SetSurfaceWasPaintedTo(window);
+  plugin_container_manager_.SetSurfaceWasPaintedTo(window, surface_id);
   AcceleratedPluginView* view =
       static_cast<AcceleratedPluginView*>(it->second);
   // The surface is hidden until its first paint, to not show gargabe.
   if (plugin_container_manager_.SurfaceShouldBeVisible(window))
     [view setHidden:NO];
   [view setSurfaceWasSwapped:YES];
 }
 
 void RenderWidgetHostViewMac::GpuRenderingStateDidChange() {
   CHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
@@ skipping 1577 matching lines @@
   if (!string) return NO;
 
   // If the user is currently using an IME, confirm the IME input,
   // and then insert the text from the service, the same as TextEdit and Safari.
   [self confirmComposition];
   [self insertText:string];
   return YES;
 }
 
 @end