Disable automatic flushes on compositor contexts.

content/browser/renderer_host/image_transport_factory.cc

 // 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/image_transport_factory.h"
 
 #include <algorithm>
 #include <map>
 
 #include "base/bind.h"
@@ skipping 382 matching lines @@
   }
 
   WebGraphicsContext3DCommandBufferImpl* CreateContextCommon(
       const base::WeakPtr<WebGraphicsContext3DSwapBuffersClient>& swap_client,
       int surface_id) {
     WebKit::WebGraphicsContext3D::Attributes attrs;
     attrs.shareResources = true;
     attrs.depth = false;
     attrs.stencil = false;
     attrs.antialias = false;
+    attrs.noAutomaticFlushes = true;
     GpuChannelHostFactory* factory = BrowserGpuChannelHostFactory::instance();
     GURL url("chrome://gpu/GpuProcessTransportFactory::CreateContextCommon");
     scoped_ptr<WebGraphicsContext3DCommandBufferImpl> context(
         new WebGraphicsContext3DCommandBufferImpl(
             surface_id,
             url,
             factory,
             swap_client));
     if (!context->Initialize(
         attrs,
@@ skipping 77 matching lines @@
 void ImageTransportFactory::Terminate() {
   ui::ContextFactory::SetInstance(NULL);
   delete g_factory;
   g_factory = NULL;
 }
 
 // static
 ImageTransportFactory* ImageTransportFactory::GetInstance() {
   return g_factory;
 }