gpu: Remove use of MessageLoopProxy and deprecated MessageLoop APIs

gpu/command_buffer/service/in_process_command_buffer.cc

 // Copyright 2013 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 "gpu/command_buffer/service/in_process_command_buffer.h"
 
 #include <queue>
 #include <set>
 #include <utility>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/command_line.h"
 #include "base/lazy_instance.h"
+#include "base/location.h"
 #include "base/logging.h"
 #include "base/memory/weak_ptr.h"
-#include "base/message_loop/message_loop_proxy.h"
 #include "base/sequence_checker.h"
+#include "base/single_thread_task_runner.h"
 #include "base/synchronization/condition_variable.h"
+#include "base/thread_task_runner_handle.h"
 #include "base/threading/thread.h"
 #include "gpu/command_buffer/client/gpu_memory_buffer_manager.h"
 #include "gpu/command_buffer/common/value_state.h"
 #include "gpu/command_buffer/service/command_buffer_service.h"
 #include "gpu/command_buffer/service/context_group.h"
 #include "gpu/command_buffer/service/gl_context_virtual.h"
 #include "gpu/command_buffer/service/gpu_scheduler.h"
 #include "gpu/command_buffer/service/gpu_switches.h"
 #include "gpu/command_buffer/service/image_factory.h"
 #include "gpu/command_buffer/service/image_manager.h"
@@ skipping 61 matching lines @@
 
 GpuInProcessThread::GpuInProcessThread() : base::Thread("GpuThread") {
   Start();
 }
 
 GpuInProcessThread::~GpuInProcessThread() {
   Stop();
 }
 
 void GpuInProcessThread::ScheduleTask(const base::Closure& task) {
-  message_loop()->PostTask(FROM_HERE, task);
+  task_runner()->PostTask(FROM_HERE, task);
 }
 
 void GpuInProcessThread::ScheduleIdleWork(const base::Closure& callback) {
   // Match delay with GpuCommandBufferStub.
-  message_loop()->PostDelayedTask(
-      FROM_HERE, callback, base::TimeDelta::FromMilliseconds(2));
+  task_runner()->PostDelayedTask(FROM_HERE, callback,
+                                 base::TimeDelta::FromMilliseconds(2));
 }
 
 scoped_refptr<gles2::ShaderTranslatorCache>
 GpuInProcessThread::shader_translator_cache() {
   if (!shader_translator_cache_.get())
     shader_translator_cache_ = new gpu::gles2::ShaderTranslatorCache;
   return shader_translator_cache_;
 }
 
 struct GpuInProcessThreadHolder {
@@ skipping 805 matching lines @@
   return last_state_.error;
 }
 
 bool InProcessCommandBuffer::Initialize() {
   NOTREACHED();
   return false;
 }
 
 namespace {
 
-void PostCallback(const scoped_refptr<base::MessageLoopProxy>& loop,
-                         const base::Closure& callback) {
-  // The loop.get() check is to support using InProcessCommandBuffer on a thread
-  // without a message loop.
-  if (loop.get() && !loop->BelongsToCurrentThread()) {
-    loop->PostTask(FROM_HERE, callback);
+void PostCallback(
+    const scoped_refptr<base::SingleThreadTaskRunner>& task_runner,
+    const base::Closure& callback) {
+  // The task_runner.get() check is to support using InProcessCommandBuffer on
+  // a thread without a message loop.
+  if (task_runner.get() && !task_runner->BelongsToCurrentThread()) {
+    task_runner->PostTask(FROM_HERE, callback);
   } else {
     callback.Run();
   }
 }
 
 void RunOnTargetThread(scoped_ptr<base::Closure> callback) {
   DCHECK(callback.get());
   callback->Run();
 }
 
 }  // anonymous namespace
 
 base::Closure InProcessCommandBuffer::WrapCallback(
     const base::Closure& callback) {
   // Make sure the callback gets deleted on the target thread by passing
   // ownership.
   scoped_ptr<base::Closure> scoped_callback(new base::Closure(callback));
   base::Closure callback_on_client_thread =
       base::Bind(&RunOnTargetThread, base::Passed(&scoped_callback));
   base::Closure wrapped_callback =
-      base::Bind(&PostCallback, base::MessageLoopProxy::current(),
+      base::Bind(&PostCallback, base::ThreadTaskRunnerHandle::IsSet()
+                                    ? base::ThreadTaskRunnerHandle::Get()
+                                    : nullptr,
                  callback_on_client_thread);
   return wrapped_callback;
 }
 
 #if defined(OS_ANDROID)
 scoped_refptr<gfx::SurfaceTexture>
 InProcessCommandBuffer::GetSurfaceTexture(uint32 stream_id) {
   DCHECK(stream_texture_manager_);
   return stream_texture_manager_->GetSurfaceTexture(stream_id);
 }
 #endif
 
 }  // namespace gpu