cc: Shrink size of display item

cc/playback/filter_display_item.cc

Index: cc/playback/filter_display_item.cc
diff --git a/cc/playback/filter_display_item.cc b/cc/playback/filter_display_item.cc
index ddf595760d11f0990c0b716e293f798998a5850e..a7574062cca26fcf315068da68a2b5e84c4a2db8 100644
--- a/cc/playback/filter_display_item.cc
+++ b/cc/playback/filter_display_item.cc
@@ -18,22 +18,21 @@
 
 namespace cc {
 
-FilterDisplayItem::FilterDisplayItem() {
+FilterDisplayItem::FilterDisplayItem(const FilterOperations& filters,
+                                     const gfx::RectF& bounds) {
+  SetNew(filters, bounds);
 }
 
-FilterDisplayItem::~FilterDisplayItem() {
+FilterDisplayItem::FilterDisplayItem(const proto::DisplayItem& proto) {
+  FromProtobuf(proto);
 }
 
+FilterDisplayItem::~FilterDisplayItem() {}
+
 void FilterDisplayItem::SetNew(const FilterOperations& filters,
                                const gfx::RectF& bounds) {
   filters_ = filters;
   bounds_ = bounds;
-
-  // FilterOperations doesn't expose its capacity, but size is probably good
-  // enough.
-  size_t external_memory_usage = filters_.size() * sizeof(filters_.at(0));
-  DisplayItem::SetNew(true /* suitable_for_gpu_raster */, 1 /* op_count */,
-                      external_memory_usage);
 }
 
 void FilterDisplayItem::ToProtobuf(proto::DisplayItem* proto) const {
@@ -51,7 +50,8 @@ void FilterDisplayItem::FromProtobuf(const proto::DisplayItem& proto) {
   const proto::FilterDisplayItem& details = proto.filter_item();
   gfx::RectF bounds = ProtoToRectF(details.bounds());
 
-  // TODO(dtrainor): Support deserializing FilterOperations (crbug.com/541321).
+  // TODO(dtrainor): Support deserializing FilterOperations
+  // (crbug.com/541321).
   FilterOperations filters;
 
   SetNew(filters, bounds);
@@ -84,14 +84,24 @@ void FilterDisplayItem::AsValueInto(
       bounds_.ToString().c_str(), visual_rect.ToString().c_str()));
 }
 
-EndFilterDisplayItem::EndFilterDisplayItem() {
-  DisplayItem::SetNew(true /* suitable_for_gpu_raster */, 0 /* op_count */,
-                      0 /* external_memory_usage */);
+size_t FilterDisplayItem::ExternalMemoryUsage() const {
+  // FilterOperations doesn't expose its capacity, but size is probably good
+  // enough.
+  return filters_.size() * sizeof(filters_.at(0));
 }
 
-EndFilterDisplayItem::~EndFilterDisplayItem() {
+int FilterDisplayItem::ApproximateOpCount() const {
+  return 1;
 }
 
+EndFilterDisplayItem::EndFilterDisplayItem() {}
+
+EndFilterDisplayItem::EndFilterDisplayItem(const proto::DisplayItem& proto) {
+  FromProtobuf(proto);
+}
+
+EndFilterDisplayItem::~EndFilterDisplayItem() {}
+
 void EndFilterDisplayItem::ToProtobuf(proto::DisplayItem* proto) const {
   proto->set_type(proto::DisplayItem::Type_EndFilter);
 }
@@ -115,4 +125,12 @@ void EndFilterDisplayItem::AsValueInto(
                          visual_rect.ToString().c_str()));
 }
 
+size_t EndFilterDisplayItem::ExternalMemoryUsage() const {
+  return 0;
+}
+
+int EndFilterDisplayItem::ApproximateOpCount() const {
+  return 0;
+}
+
 }  // namespace cc