cc: Shrink size of display item

cc/playback/clip_path_display_item.cc

Index: cc/playback/clip_path_display_item.cc
diff --git a/cc/playback/clip_path_display_item.cc b/cc/playback/clip_path_display_item.cc
index 2168ee1f9cd8a2c1cea4c604382477ac9684a19b..9e754c90d6d54cc125293b74be97f46e323943e4 100644
--- a/cc/playback/clip_path_display_item.cc
+++ b/cc/playback/clip_path_display_item.cc
@@ -12,7 +12,14 @@
 
 namespace cc {
 
-ClipPathDisplayItem::ClipPathDisplayItem() {
+ClipPathDisplayItem::ClipPathDisplayItem(const SkPath& clip_path,
+                                         SkRegion::Op clip_op,
+                                         bool antialias) {
+  SetNew(clip_path, clip_op, antialias);
+}
+
+ClipPathDisplayItem::ClipPathDisplayItem(const proto::DisplayItem& proto) {
+  FromProtobuf(proto);
 }
 
 ClipPathDisplayItem::~ClipPathDisplayItem() {
@@ -24,11 +31,6 @@ void ClipPathDisplayItem::SetNew(const SkPath& clip_path,
   clip_path_ = clip_path;
   clip_op_ = clip_op;
   antialias_ = antialias;
-
-  // The size of SkPath's external storage is not currently accounted for (and
-  // may well be shared anyway).
-  DisplayItem::SetNew(true /* suitable_for_gpu_raster */, 1 /* op_count */,
-                      0 /* external_memory_usage */);
 }
 
 void ClipPathDisplayItem::ToProtobuf(proto::DisplayItem* proto) const {
@@ -79,9 +81,21 @@ void ClipPathDisplayItem::AsValueInto(
       clip_path_.countPoints(), visual_rect.ToString().c_str()));
 }
 
-EndClipPathDisplayItem::EndClipPathDisplayItem() {
-  DisplayItem::SetNew(true /* suitable_for_gpu_raster */, 0 /* op_count */,
-                      0 /* external_memory_usage */);
+size_t ClipPathDisplayItem::ExternalMemoryUsage() const {
+  // The size of SkPath's external storage is not currently accounted for (and
+  // may well be shared anyway).
+  return 0;
+}
+
+int ClipPathDisplayItem::ApproximateOpCount() const {
+  return 1;
+}
+
+EndClipPathDisplayItem::EndClipPathDisplayItem() {}
+
+EndClipPathDisplayItem::EndClipPathDisplayItem(
+    const proto::DisplayItem& proto) {
+  FromProtobuf(proto);
 }
 
 EndClipPathDisplayItem::~EndClipPathDisplayItem() {
@@ -110,4 +124,12 @@ void EndClipPathDisplayItem::AsValueInto(
                          visual_rect.ToString().c_str()));
 }
 
+size_t EndClipPathDisplayItem::ExternalMemoryUsage() const {
+  return 0;
+}
+
+int EndClipPathDisplayItem::ApproximateOpCount() const {
+  return 0;
+}
+
 }  // namespace cc