[blimp] Add SkPicture caching support.

cc/playback/compositing_display_item.h

 // Copyright 2015 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_COMPOSITING_DISPLAY_ITEM_H_
 #define CC_PLAYBACK_COMPOSITING_DISPLAY_ITEM_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <memory>
 
 #include "base/memory/ptr_util.h"
 #include "cc/base/cc_export.h"
 #include "cc/playback/display_item.h"
 #include "third_party/skia/include/core/SkColorFilter.h"
 #include "third_party/skia/include/core/SkRect.h"
 #include "third_party/skia/include/core/SkRefCnt.h"
 #include "third_party/skia/include/core/SkXfermode.h"
 #include "ui/gfx/geometry/rect_f.h"
 
 class SkCanvas;
 
 namespace cc {
-class ImageSerializationProcessor;
 
 class CC_EXPORT CompositingDisplayItem : public DisplayItem {
  public:
   CompositingDisplayItem(uint8_t alpha,
                          SkXfermode::Mode xfermode,
                          SkRect* bounds,
                          sk_sp<SkColorFilter> color_filter,
                          bool lcd_text_requires_opaque_layer);
   explicit CompositingDisplayItem(const proto::DisplayItem& proto);
   ~CompositingDisplayItem() override;
 
-  void ToProtobuf(proto::DisplayItem* proto,
-                  ImageSerializationProcessor* image_serialization_processor)
-      const override;
+  void ToProtobuf(proto::DisplayItem* proto) const override;
   void Raster(SkCanvas* canvas,
               const gfx::Rect& canvas_target_playback_rect,
               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 { return 1; }
 
  private:
@@ skipping 14 matching lines @@
 class CC_EXPORT EndCompositingDisplayItem : public DisplayItem {
  public:
   EndCompositingDisplayItem();
   explicit EndCompositingDisplayItem(const proto::DisplayItem& proto);
   ~EndCompositingDisplayItem() override;
 
   static std::unique_ptr<EndCompositingDisplayItem> Create() {
     return base::WrapUnique(new EndCompositingDisplayItem());
   }
 
-  void ToProtobuf(proto::DisplayItem* proto,
-                  ImageSerializationProcessor* image_serialization_processor)
-      const override;
+  void ToProtobuf(proto::DisplayItem* proto) const override;
   void Raster(SkCanvas* canvas,
               const gfx::Rect& canvas_target_playback_rect,
               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 { return 0; }
 };
 
 }  // namespace cc
 
 #endif  // CC_PLAYBACK_COMPOSITING_DISPLAY_ITEM_H_