Remove threading from GpuVideoAcceleratorFactories

content/renderer/render_thread_impl.cc

Index: content/renderer/render_thread_impl.cc
diff --git a/content/renderer/render_thread_impl.cc b/content/renderer/render_thread_impl.cc
index 7a8d51d6b1764fe5c81e7a68376f70da0382f52a..3a0c0fd5e5ad7d0f5c3342fba55fad44fa3344e9 100644
--- a/content/renderer/render_thread_impl.cc
+++ b/content/renderer/render_thread_impl.cc
@@ -898,6 +898,8 @@ RenderThreadImpl::GetGpuFactories() {
   scoped_refptr<GpuChannelHost> gpu_channel_host = GetGpuChannel();
   const CommandLine* cmd_line = CommandLine::ForCurrentProcess();
   scoped_refptr<RendererGpuVideoAcceleratorFactories> gpu_factories;
+  scoped_refptr<base::MessageLoopProxy> media_loop_proxy =
+      GetMediaThreadMessageLoopProxy();
   if (!cmd_line->HasSwitch(switches::kDisableAcceleratedVideoDecode)) {
     if (!gpu_va_context_provider_ ||
         gpu_va_context_provider_->DestroyedOnMainThread()) {
@@ -913,11 +915,18 @@ RenderThreadImpl::GetGpuFactories() {
                   GURL("chrome://gpu/RenderThreadImpl::GetGpuVDAContext3D"),
                   WebGraphicsContext3DCommandBufferImpl::SharedMemoryLimits())),
           "GPU-VideoAccelerator-Offscreen");
+      if (gpu_va_context_provider_) {
+        media_loop_proxy->PostTask(
+            FROM_HERE,
+            base::Bind(
+                base::IgnoreResult(&cc::ContextProvider::BindToCurrentThread),
+                gpu_va_context_provider_));
+      }
     }
   }
-  if (gpu_channel_host) {
+  if (gpu_va_context_provider_) {
     gpu_factories = new RendererGpuVideoAcceleratorFactories(
-        gpu_channel_host.get(), gpu_va_context_provider_);
+        gpu_channel_host, media_loop_proxy, gpu_va_context_provider_);
   }
   return gpu_factories;
 }