cc: Devirtualize DisplayItem::ExternalMemoryUsage().

cc/playback/clip_path_display_item.cc

 // Copyright 2015 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/clip_path_display_item.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include "base/strings/stringprintf.h"
 #include "base/trace_event/trace_event_argument.h"
 #include "cc/proto/display_item.pb.h"
 #include "cc/proto/skia_conversions.h"
 #include "third_party/skia/include/core/SkCanvas.h"
 
 namespace cc {
 
 ClipPathDisplayItem::ClipPathDisplayItem(const SkPath& clip_path,
                                          SkClipOp clip_op,
-                                         bool antialias) {
+                                         bool antialias)
+    : DisplayItem(CLIP_PATH) {
   SetNew(clip_path, clip_op, antialias);
 }
 
-ClipPathDisplayItem::ClipPathDisplayItem(const proto::DisplayItem& proto) {
+ClipPathDisplayItem::ClipPathDisplayItem(const proto::DisplayItem& proto)
+    : DisplayItem(CLIP_PATH) {
   DCHECK_EQ(proto::DisplayItem::Type_ClipPath, proto.type());
 
   const proto::ClipPathDisplayItem& details = proto.clip_path_item();
   SkClipOp clip_op = SkClipOpFromProto(details.clip_op());
   bool antialias = details.antialias();
 
   SkPath clip_path;
   if (details.has_clip_path()) {
     size_t bytes_read = clip_path.readFromMemory(details.clip_path().data(),
                                                  details.clip_path().size());
@@ skipping 37 matching lines @@
 }
 
 void ClipPathDisplayItem::AsValueInto(
     const gfx::Rect& visual_rect,
     base::trace_event::TracedValue* array) const {
   array->AppendString(base::StringPrintf(
       "ClipPathDisplayItem length: %d visualRect: [%s]",
       clip_path_.countPoints(), visual_rect.ToString().c_str()));
 }
 
-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;
-}
+EndClipPathDisplayItem::EndClipPathDisplayItem() : DisplayItem(END_CLIP_PATH) {}
 
-EndClipPathDisplayItem::EndClipPathDisplayItem() {}
-
-EndClipPathDisplayItem::EndClipPathDisplayItem(
-    const proto::DisplayItem& proto) {
+EndClipPathDisplayItem::EndClipPathDisplayItem(const proto::DisplayItem& proto)
+    : DisplayItem(END_CLIP_PATH) {
   DCHECK_EQ(proto::DisplayItem::Type_EndClipPath, proto.type());
 }
 
 EndClipPathDisplayItem::~EndClipPathDisplayItem() {
 }
 
 void EndClipPathDisplayItem::ToProtobuf(proto::DisplayItem* proto) const {
   proto->set_type(proto::DisplayItem::Type_EndClipPath);
 }
 
 void EndClipPathDisplayItem::Raster(
     SkCanvas* canvas,
     SkPicture::AbortCallback* callback) const {
   canvas->restore();
 }
 
 void EndClipPathDisplayItem::AsValueInto(
     const gfx::Rect& visual_rect,
     base::trace_event::TracedValue* array) const {
   array->AppendString(
       base::StringPrintf("EndClipPathDisplayItem visualRect: [%s]",
                          visual_rect.ToString().c_str()));
 }
 
-size_t EndClipPathDisplayItem::ExternalMemoryUsage() const {
-  return 0;
-}
-
 }  // namespace cc