cc: Remove all blimp code from cc.

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 aad82535bfe7876b00476d44fe30c41e607ea8ec..4885014e3d50e4846b28ad84aca747bd3bf6b5e9 100644
--- a/cc/playback/drawing_display_item.h
+++ b/cc/playback/drawing_display_item.h
@@ -19,19 +19,14 @@ class SkCanvas;
 class SkPicture;
 
 namespace cc {
-class ClientPictureCache;
 
 class CC_EXPORT DrawingDisplayItem : public DisplayItem {
  public:
   DrawingDisplayItem();
   explicit DrawingDisplayItem(sk_sp<const SkPicture> picture);
-  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) const override;
   sk_sp<const SkPicture> GetPicture() const override;
   void Raster(SkCanvas* canvas,
               SkPicture::AbortCallback* callback) const override;