[blimp] Add SkPicture caching support.

cc/playback/drawing_display_item.h

 // Copyright 2014 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_PLAYBACK_DRAWING_DISPLAY_ITEM_H_
 #define CC_PLAYBACK_DRAWING_DISPLAY_ITEM_H_
 
 #include <stddef.h>
 
 #include <memory>
+#include <vector>
 
 #include "cc/base/cc_export.h"
 #include "cc/playback/display_item.h"
 #include "third_party/skia/include/core/SkRefCnt.h"
 #include "ui/gfx/geometry/point_f.h"
 
 class SkCanvas;
 class SkPicture;
 
 namespace cc {
-class ImageSerializationProcessor;
+class ClientPictureCache;
 
 class CC_EXPORT DrawingDisplayItem : public DisplayItem {
  public:
   DrawingDisplayItem();
   explicit DrawingDisplayItem(sk_sp<const SkPicture> picture);
-  explicit DrawingDisplayItem(
-      const proto::DisplayItem& proto,
-      ImageSerializationProcessor* image_serialization_processor);
+  explicit DrawingDisplayItem(const proto::DisplayItem& proto,
+                              ClientPictureCache* client_picture_cache,
+                              std::vector<uint32_t>* used_engine_picture_ids);
   explicit DrawingDisplayItem(const DrawingDisplayItem& item);
   ~DrawingDisplayItem() override;
 
-  void ToProtobuf(proto::DisplayItem* proto,
-                  ImageSerializationProcessor* image_serialization_processor)
-      const override;
+  void ToProtobuf(proto::DisplayItem* proto) const override;
+  sk_sp<const SkPicture> GetPicture() const override;
   void Raster(SkCanvas* canvas,
               SkPicture::AbortCallback* callback) const override;
   void AsValueInto(const gfx::Rect& visual_rect,
                    base::trace_event::TracedValue* array) const override;
   size_t ExternalMemoryUsage() const override;
 
   int ApproximateOpCount() const;
 
   void CloneTo(DrawingDisplayItem* item) const;
 
  private:
   void SetNew(sk_sp<const SkPicture> picture);
 
   sk_sp<const SkPicture> picture_;
 };
 
 }  // namespace cc
 
 #endif  // CC_PLAYBACK_DRAWING_DISPLAY_ITEM_H_