Remove parts of //cc we aren't using

cc/test/fake_video_frame_provider.h

-// Copyright 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 CC_TEST_FAKE_VIDEO_FRAME_PROVIDER_H_
-#define CC_TEST_FAKE_VIDEO_FRAME_PROVIDER_H_
-
-#include "cc/layers/video_frame_provider.h"
-#include "media/base/video_frame.h"
-
-namespace cc {
-
-// Fake video frame provider that always provides the same VideoFrame.
-class FakeVideoFrameProvider : public VideoFrameProvider {
- public:
-  FakeVideoFrameProvider();
-  ~FakeVideoFrameProvider() override;
-
-  void SetVideoFrameProviderClient(Client* client) override;
-  scoped_refptr<media::VideoFrame> GetCurrentFrame() override;
-  void PutCurrentFrame(const scoped_refptr<media::VideoFrame>&) override {}
-
-  Client* client() { return client_; }
-
-  void set_frame(const scoped_refptr<media::VideoFrame>& frame) {
-    frame_ = frame;
-  }
-
- private:
-  scoped_refptr<media::VideoFrame> frame_;
-  Client* client_;
-};
-
-}  // namespace cc
-
-#endif  // CC_TEST_FAKE_VIDEO_FRAME_PROVIDER_H_