cc: Devirtualize DisplayItem::ExternalMemoryUsage().

cc/playback/transform_display_item.cc

 // Copyright 2014 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.
 
 #include "cc/playback/transform_display_item.h"
 
 #include <stddef.h>
 
 #include "base/strings/stringprintf.h"
 #include "base/trace_event/trace_event_argument.h"
 #include "cc/proto/display_item.pb.h"
 #include "cc/proto/gfx_conversions.h"
 #include "third_party/skia/include/core/SkCanvas.h"
 
 namespace cc {
 
 TransformDisplayItem::TransformDisplayItem(const gfx::Transform& transform)
-    : transform_(gfx::Transform::kSkipInitialization) {
+    : DisplayItem(TRANSFORM), transform_(gfx::Transform::kSkipInitialization) {
   SetNew(transform);
 }
 
-TransformDisplayItem::TransformDisplayItem(const proto::DisplayItem& proto) {
+TransformDisplayItem::TransformDisplayItem(const proto::DisplayItem& proto)
+    : DisplayItem(TRANSFORM) {
   DCHECK_EQ(proto::DisplayItem::Type_Transform, proto.type());
 
   const proto::TransformDisplayItem& details = proto.transform_item();
   gfx::Transform transform = ProtoToTransform(details.transform());
 
   SetNew(transform);
 }
 
 TransformDisplayItem::~TransformDisplayItem() {
 }
@@ skipping 17 matching lines @@
 }
 
 void TransformDisplayItem::AsValueInto(
     const gfx::Rect& visual_rect,
     base::trace_event::TracedValue* array) const {
   array->AppendString(base::StringPrintf(
       "TransformDisplayItem transform: [%s] visualRect: [%s]",
       transform_.ToString().c_str(), visual_rect.ToString().c_str()));
 }
 
-size_t TransformDisplayItem::ExternalMemoryUsage() const {
-  return 0;
-}
-
-EndTransformDisplayItem::EndTransformDisplayItem() {}
+EndTransformDisplayItem::EndTransformDisplayItem()
+    : DisplayItem(END_TRANSFORM) {}
 
 EndTransformDisplayItem::EndTransformDisplayItem(
-    const proto::DisplayItem& proto) {
+    const proto::DisplayItem& proto)
+    : DisplayItem(END_TRANSFORM) {
   DCHECK_EQ(proto::DisplayItem::Type_EndTransform, proto.type());
 }
 
 EndTransformDisplayItem::~EndTransformDisplayItem() {
 }
 
 void EndTransformDisplayItem::ToProtobuf(proto::DisplayItem* proto) const {
   proto->set_type(proto::DisplayItem::Type_EndTransform);
 }
 
 void EndTransformDisplayItem::Raster(
     SkCanvas* canvas,
     SkPicture::AbortCallback* callback) const {
   canvas->restore();
 }
 
 void EndTransformDisplayItem::AsValueInto(
     const gfx::Rect& visual_rect,
     base::trace_event::TracedValue* array) const {
   array->AppendString(
       base::StringPrintf("EndTransformDisplayItem visualRect: [%s]",
                          visual_rect.ToString().c_str()));
 }
 
-size_t EndTransformDisplayItem::ExternalMemoryUsage() const {
-  return 0;
-}
-
 }  // namespace cc