cc: Remove all blimp code from cc.

cc/test/picture_cache_model.h

-// Copyright 2016 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_PICTURE_CACHE_MODEL_H_
-#define CC_TEST_PICTURE_CACHE_MODEL_H_
-
-#include <stdint.h>
-
-#include <unordered_map>
-
-#include "base/macros.h"
-#include "third_party/skia/include/core/SkRefCnt.h"
-
-class SkPicture;
-
-namespace cc {
-
-// PictureCacheModel provides a way for sharing a cache between an engine
-// and the client. When the FakeEnginePictureCache and the ClientPictureCache
-// point to the same PictureCacheModel, the calls to AddPicture on the
-// engine make an SkPicture available through GetPicture on the client.
-class PictureCacheModel {
- public:
-  PictureCacheModel();
-  ~PictureCacheModel();
-
-  void AddPicture(const SkPicture* picture);
-
-  sk_sp<const SkPicture> GetPicture(uint32_t unique_id);
-
- private:
-  std::unordered_map<uint32_t, sk_sp<const SkPicture>> pictures_;
-
-  DISALLOW_COPY_AND_ASSIGN(PictureCacheModel);
-};
-
-}  // namespace cc
-
-#endif  // CC_TEST_PICTURE_CACHE_MODEL_H_