Fix names of in-process threads, tidy gpu DEPS

content/gpu/gpu_main_thread.h

-// 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.
-
-#ifndef CONTENT_GPU_GPU_MAIN_THREAD_H_
-#define CONTENT_GPU_GPU_MAIN_THREAD_H_
-
-#include "base/threading/thread.h"
-#include "content/common/content_export.h"
-
-namespace content {
-
-class GpuProcess;
-
-// This class creates a GPU thread (instead of a GPU process), when running
-// with --in-process-gpu or --single-process.
-class GpuMainThread : public base::Thread {
- public:
-  explicit GpuMainThread(const std::string& channel_id);
-  virtual ~GpuMainThread();
-
- protected:
-  virtual void Init() OVERRIDE;
-  virtual void CleanUp() OVERRIDE;
-
- private:
-  std::string channel_id_;
-  // Deleted in CleanUp() on the gpu thread, so don't use smart pointers.
-  GpuProcess* gpu_process_;
-
-  DISALLOW_COPY_AND_ASSIGN(GpuMainThread);
-};
-
-CONTENT_EXPORT base::Thread* CreateGpuMainThread(const std::string& channel_id);
-
-}  // namespace content
-
-#endif  // CONTENT_GPU_GPU_MAIN_THREAD_H_