services/ui: Revert CLs that broke Windows.

services/ui/gles2/gpu_state.h

+// Copyright 2015 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.
+
+#ifndef SERVICES_UI_GLES2_GPU_STATE_H_
+#define SERVICES_UI_GLES2_GPU_STATE_H_
+
+#include <memory>
+
+#include "base/memory/ref_counted.h"
+#include "base/single_thread_task_runner.h"
+#include "base/threading/thread.h"
+#include "gpu/command_buffer/service/gpu_preferences.h"
+#include "gpu/command_buffer/service/mailbox_manager_impl.h"
+#include "gpu/command_buffer/service/sync_point_manager.h"
+#include "gpu/config/gpu_driver_bug_workarounds.h"
+#include "gpu/config/gpu_info.h"
+#include "services/ui/gles2/command_buffer_driver_manager.h"
+#include "services/ui/gles2/command_buffer_task_runner.h"
+#include "ui/gl/gl_share_group.h"
+
+namespace {
+class WaitableEvent;
+}
+
+namespace ui {
+
+// We need to share these across all CommandBuffer instances so that contexts
+// they create can share resources with each other via mailboxes.
+class GpuState : public base::RefCountedThreadSafe<GpuState> {
+ public:
+  GpuState();
+
+  // We run the CommandBufferImpl on the control_task_runner, which forwards
+  // most method class to the CommandBufferDriver, which runs on the "driver",
+  // thread (i.e., the thread on which GpuImpl instances are created).
+  scoped_refptr<base::SingleThreadTaskRunner> control_task_runner() {
+    return control_thread_task_runner_;
+  }
+
+  void StopThreads();
+
+  const gpu::GpuPreferences& gpu_preferences() const {
+    return gpu_preferences_;
+  }
+
+  const gpu::GpuDriverBugWorkarounds& gpu_driver_bug_workarounds() const {
+    return gpu_driver_bug_workarounds_;
+  }
+
+  CommandBufferTaskRunner* command_buffer_task_runner() const {
+    return command_buffer_task_runner_.get();
+  }
+
+  CommandBufferDriverManager* driver_manager() const {
+    return driver_manager_.get();
+  }
+
+  // These objects are intended to be used on the "driver" thread (i.e., the
+  // thread on which GpuImpl instances are created).
+  gl::GLShareGroup* share_group() const { return share_group_.get(); }
+  gpu::gles2::MailboxManager* mailbox_manager() const {
+    return mailbox_manager_.get();
+  }
+  gpu::SyncPointManager* sync_point_manager() const {
+    return sync_point_manager_.get();
+  }
+
+  const gpu::GPUInfo& gpu_info() const {
+    return gpu_info_;
+  }
+
+  bool HardwareRenderingAvailable() const {
+    return hardware_rendering_available_;
+  }
+
+ private:
+  friend class base::RefCountedThreadSafe<GpuState>;
+  ~GpuState();
+
+  void InitializeOnGpuThread(base::WaitableEvent* event);
+
+  void DestroyGpuSpecificStateOnGpuThread();
+
+  // |gpu_thread_| is for executing OS GL calls.
+  base::Thread gpu_thread_;
+  // |control_thread_| is for mojo incoming calls of CommandBufferImpl.
+  base::Thread control_thread_;
+
+  // Same as control_thread_->task_runner(). The TaskRunner is cached as it may
+  // be needed during shutdown.
+  scoped_refptr<base::SingleThreadTaskRunner> control_thread_task_runner_;
+
+  gpu::GpuPreferences gpu_preferences_;
+  const gpu::GpuDriverBugWorkarounds gpu_driver_bug_workarounds_;
+  scoped_refptr<CommandBufferTaskRunner> command_buffer_task_runner_;
+  std::unique_ptr<CommandBufferDriverManager> driver_manager_;
+  std::unique_ptr<gpu::SyncPointManager> sync_point_manager_;
+  scoped_refptr<gl::GLShareGroup> share_group_;
+  scoped_refptr<gpu::gles2::MailboxManager> mailbox_manager_;
+  gpu::GPUInfo gpu_info_;
+  bool hardware_rendering_available_;
+};
+
+}  // namespace ui
+
+#endif  // SERVICES_UI_GLES2_GPU_STATE_H_