Move GPUFeatureChecker to content layer

chrome/browser/gpu/gpu_feature_checker.h

-// Copyright (c) 2012 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 CHROME_BROWSER_GPU_GPU_FEATURE_CHECKER_H_
-#define CHROME_BROWSER_GPU_GPU_FEATURE_CHECKER_H_
-
-#include "base/callback.h"
-#include "base/macros.h"
-#include "base/memory/ref_counted.h"
-#include "content/public/browser/gpu_data_manager_observer.h"
-#include "gpu/config/gpu_feature_type.h"
-
-class GPUFeatureChecker : public base::RefCountedThreadSafe<GPUFeatureChecker>,
-                          public content::GpuDataManagerObserver {
- public:
-  typedef base::Callback<void(bool feature_available)> FeatureAvailableCallback;
-
-  GPUFeatureChecker(gpu::GpuFeatureType feature,
-                    FeatureAvailableCallback callback);
-
-  // Check to see if |feature_| is available on the current GPU. |callback_|
-  // will be called to indicate the availability of the feature. Must be called
-  // from the the UI thread.
-  void CheckGPUFeatureAvailability();
-
-  // content::GpuDataManagerObserver
-  void OnGpuInfoUpdate() override;
-
- private:
-  friend class base::RefCountedThreadSafe<GPUFeatureChecker>;
-
-  ~GPUFeatureChecker() override;
-
-  gpu::GpuFeatureType feature_;
-  FeatureAvailableCallback callback_;
-
-  DISALLOW_COPY_AND_ASSIGN(GPUFeatureChecker);
-};
-
-#endif  // CHROME_BROWSER_GPU_GPU_FEATURE_CHECKER_H_