[blimp] Add SkPicture caching support.

cc/playback/float_clip_display_item.cc

Index: cc/playback/float_clip_display_item.cc
diff --git a/cc/playback/float_clip_display_item.cc b/cc/playback/float_clip_display_item.cc
index 621c4d9a52a6c818cf0a2a6fcd6bbf3e1442d23e..3601e9df0fd0d8d1d4daa0bf2a75e41cc30257b8 100644
--- a/cc/playback/float_clip_display_item.cc
+++ b/cc/playback/float_clip_display_item.cc
@@ -14,7 +14,6 @@
 #include "ui/gfx/skia_util.h"
 
 namespace cc {
-class ImageSerializationProcessor;
 
 FloatClipDisplayItem::FloatClipDisplayItem(const gfx::RectF& clip_rect) {
   SetNew(clip_rect);
@@ -36,9 +35,7 @@ void FloatClipDisplayItem::SetNew(const gfx::RectF& clip_rect) {
   clip_rect_ = clip_rect;
 }
 
-void FloatClipDisplayItem::ToProtobuf(
-    proto::DisplayItem* proto,
-    ImageSerializationProcessor* image_serialization_processor) const {
+void FloatClipDisplayItem::ToProtobuf(proto::DisplayItem* proto) const {
   proto->set_type(proto::DisplayItem::Type_FloatClip);
 
   proto::FloatClipDisplayItem* details = proto->mutable_float_clip_item();
@@ -74,9 +71,7 @@ EndFloatClipDisplayItem::EndFloatClipDisplayItem(
 EndFloatClipDisplayItem::~EndFloatClipDisplayItem() {
 }
 
-void EndFloatClipDisplayItem::ToProtobuf(
-    proto::DisplayItem* proto,
-    ImageSerializationProcessor* image_serialization_processor) const {
+void EndFloatClipDisplayItem::ToProtobuf(proto::DisplayItem* proto) const {
   proto->set_type(proto::DisplayItem::Type_EndFloatClip);
 }