[blimp] Add SkPicture caching support.

cc/proto/image_serialization_processor.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_PROTO_IMAGE_SERIALIZATION_PROCESSOR_H_
 #define CC_PROTO_IMAGE_SERIALIZATION_PROCESSOR_H_
 
+#include "base/memory/ptr_util.h"
+#include "cc/proto/picture_cache.h"
 #include "third_party/skia/include/core/SkPicture.h"
 
 class SkPixelSerializer;
 
 namespace cc {
 
-// ImageSerializationProcessor provides functionality to serialize and
-// deserialize Skia images.
+// ImageSerializationProcessor provides functionality to serialize,
+// deserialize and cache Skia images.
 class ImageSerializationProcessor {
  public:
-  // The serializer returned from this function can be used to pass in to
-  // SkPicture::serialize(...) for serializing the SkPicture to a stream.
-  virtual SkPixelSerializer* GetPixelSerializer() = 0;
-
-  // Returns a function pointer valid to use for deserializing images when using
-  // SkPicture::CreateFromStream to create an SkPicture from a stream.
-  virtual SkPicture::InstallPixelRefProc GetPixelDeserializer() = 0;
+  virtual std::unique_ptr<EnginePictureCache> CreateEnginePictureCache() = 0;
+  virtual std::unique_ptr<ClientPictureCache> CreateClientPictureCache() = 0;
 };
 
 }  // namespace cc
 
 #endif  // CC_PROTO_IMAGE_SERIALIZATION_PROCESSOR_H_