Provide task runner to GLES2Impl / CommandBuffer at creation

services/ui/surfaces/surfaces_context_provider.cc

Index: services/ui/surfaces/surfaces_context_provider.cc
diff --git a/services/ui/surfaces/surfaces_context_provider.cc b/services/ui/surfaces/surfaces_context_provider.cc
index f1ecf0dc2a06acd76e1958fa5dbed0f30515ef77..11479339ae0bf00254b6574f603c1b66155473dc 100644
--- a/services/ui/surfaces/surfaces_context_provider.cc
+++ b/services/ui/surfaces/surfaces_context_provider.cc
@@ -25,7 +25,9 @@
 namespace ui {
 
 SurfacesContextProvider::SurfacesContextProvider(gfx::AcceleratedWidget widget)
-    : delegate_(nullptr), widget_(widget) {
+    : delegate_(nullptr),
+      widget_(widget),
+      task_runner_(base::ThreadTaskRunnerHandle::Get()) {
   GpuServiceMus* service = GpuServiceMus::GetInstance();
   gpu::CommandBufferProxyImpl* shared_command_buffer = nullptr;
   gpu::GpuStreamId stream_id = gpu::GpuStreamId::GPU_STREAM_DEFAULT;
@@ -39,11 +41,9 @@ SurfacesContextProvider::SurfacesContextProvider(gfx::AcceleratedWidget widget)
   attributes.bind_generates_resource = false;
   attributes.lose_context_when_out_of_memory = true;
   GURL active_url;
-  scoped_refptr<base::SingleThreadTaskRunner> task_runner =
-      base::ThreadTaskRunnerHandle::Get();
   command_buffer_proxy_impl_ = gpu::CommandBufferProxyImpl::Create(
       service->gpu_channel_local(), widget, shared_command_buffer, stream_id,
-      stream_priority, attributes, active_url, task_runner);
+      stream_priority, attributes, active_url, task_runner_);
   command_buffer_proxy_impl_->SetSwapBuffersCompletionCallback(
       base::Bind(&SurfacesContextProvider::OnGpuSwapBuffersCompleted,
                  base::Unretained(this)));
@@ -88,7 +88,7 @@ bool SurfacesContextProvider::BindToCurrentThread() {
   implementation_.reset(new gpu::gles2::GLES2Implementation(
       gles2_helper_.get(), NULL, transfer_buffer_.get(),
       bind_generates_resource, lose_context_when_out_of_memory,
-      support_client_side_arrays, gpu_control));
+      support_client_side_arrays, gpu_control, task_runner_));
   return implementation_->Initialize(
       default_limits.start_transfer_buffer_size,
       default_limits.min_transfer_buffer_size,