Provide task runner to GLES2Impl / CommandBuffer at creation

services/ui/surfaces/surfaces_context_provider.cc

 // Copyright 2014 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 "services/ui/surfaces/surfaces_context_provider.h"
 
 #include <stddef.h>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/command_line.h"
 #include "base/synchronization/waitable_event.h"
 #include "base/threading/thread_task_runner_handle.h"
 #include "build/build_config.h"
 #include "gpu/command_buffer/client/gles2_cmd_helper.h"
 #include "gpu/command_buffer/client/gles2_implementation.h"
 #include "gpu/command_buffer/client/shared_memory_limits.h"
 #include "gpu/command_buffer/client/transfer_buffer.h"
 #include "gpu/ipc/client/command_buffer_proxy_impl.h"
 #include "services/ui/common/switches.h"
 #include "services/ui/gpu/gpu_service_mus.h"
 #include "services/ui/surfaces/surfaces_context_provider_delegate.h"
 #include "ui/gl/gpu_preference.h"
 
 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;
   gpu::GpuStreamPriority stream_priority = gpu::GpuStreamPriority::NORMAL;
   gpu::gles2::ContextCreationAttribHelper attributes;
   attributes.alpha_size = -1;
   attributes.depth_size = 0;
   attributes.stencil_size = 0;
   attributes.samples = 0;
   attributes.sample_buffers = 0;
   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)));
   command_buffer_proxy_impl_->SetUpdateVSyncParametersCallback(
       base::Bind(&SurfacesContextProvider::OnUpdateVSyncParameters,
                  base::Unretained(this)));
 }
 
 void SurfacesContextProvider::SetDelegate(
     SurfacesContextProviderDelegate* delegate) {
@@ skipping 24 matching lines @@
   capabilities_ = gpu_control->GetCapabilities();
   bool bind_generates_resource =
       !!capabilities_.bind_generates_resource_chromium;
   // TODO(piman): Some contexts (such as compositor) want this to be true, so
   // this needs to be a public parameter.
   bool lose_context_when_out_of_memory = false;
   bool support_client_side_arrays = false;
   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,
       default_limits.max_transfer_buffer_size,
       default_limits.mapped_memory_reclaim_limit);
 }
 
 gpu::gles2::GLES2Interface* SurfacesContextProvider::ContextGL() {
   DCHECK(implementation_);
   return implementation_.get();
@@ skipping 47 matching lines @@
   if (delegate_)
     delegate_->OnVSyncParametersUpdated(timebase, interval);
 }
 
 void SurfacesContextProvider::SetSwapBuffersCompletionCallback(
     gl::GLSurface::SwapCompletionCallback callback) {
   swap_buffers_completion_callback_ = callback;
 }
 
 }  // namespace ui