Don't test kEnableThreadedCompositing in WebGraphicsContext3DCommandBufferImpl

content/browser/aura/gpu_process_transport_factory.cc

Index: content/browser/aura/gpu_process_transport_factory.cc
diff --git a/content/browser/aura/gpu_process_transport_factory.cc b/content/browser/aura/gpu_process_transport_factory.cc
index 12bfd8c94830b323c9f7a2ad0a66f4884b27da7b..da769411b858006a92e5ce0210b9a190390bd2ef 100644
--- a/content/browser/aura/gpu_process_transport_factory.cc
+++ b/content/browser/aura/gpu_process_transport_factory.cc
@@ -507,12 +507,14 @@ GpuProcessTransportFactory::CreateContextCommon(
   if (!gpu_channel_host)
     return scoped_ptr<WebGraphicsContext3DCommandBufferImpl>();
   GURL url("chrome://gpu/GpuProcessTransportFactory::CreateContextCommon");
+  bool use_echo_for_swap_ack = true;
   scoped_ptr<WebGraphicsContext3DCommandBufferImpl> context(
       new WebGraphicsContext3DCommandBufferImpl(
           surface_id,
           url,
           gpu_channel_host.get(),
           swap_client,
+          use_echo_for_swap_ack,
           attrs,
           false,
           WebGraphicsContext3DCommandBufferImpl::SharedMemoryLimits()));