[blimp] Add SkPicture caching support.

cc/playback/drawing_display_item.h

Index: cc/playback/drawing_display_item.h
diff --git a/cc/playback/drawing_display_item.h b/cc/playback/drawing_display_item.h
index 8d06928475c95c94a385c94bbd4bb870918f0978..0bad775357e5a6a349f0ef5d1d57370952a3e3bf 100644
--- a/cc/playback/drawing_display_item.h
+++ b/cc/playback/drawing_display_item.h
@@ -8,6 +8,7 @@
 #include <stddef.h>
 
 #include <memory>
+#include <vector>
 
 #include "cc/base/cc_export.h"
 #include "cc/playback/display_item.h"
@@ -18,21 +19,20 @@ 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,