cc: Devirtualize DisplayItem::ExternalMemoryUsage().

cc/playback/clip_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/clip_display_item.h"
 
 #include <stddef.h>
 
 #include <string>
 
 #include "base/logging.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 "cc/proto/skia_conversions.h"
 #include "third_party/skia/include/core/SkCanvas.h"
 #include "ui/gfx/skia_util.h"
 
 namespace cc {
 class ImageSerializationProcessor;
 
 ClipDisplayItem::ClipDisplayItem(const gfx::Rect& clip_rect,
                                  const std::vector<SkRRect>& rounded_clip_rects,
-                                 bool antialias) {
+                                 bool antialias)
+    : DisplayItem(CLIP) {
   SetNew(clip_rect, rounded_clip_rects, antialias);
 }
 
-ClipDisplayItem::ClipDisplayItem(const proto::DisplayItem& proto) {
+ClipDisplayItem::ClipDisplayItem(const proto::DisplayItem& proto)
+    : DisplayItem(CLIP) {
   DCHECK_EQ(proto::DisplayItem::Type_Clip, proto.type());
 
   const proto::ClipDisplayItem& details = proto.clip_item();
   gfx::Rect clip_rect = ProtoToRect(details.clip_rect());
   std::vector<SkRRect> rounded_clip_rects;
   rounded_clip_rects.reserve(details.rounded_rects_size());
   for (int i = 0; i < details.rounded_rects_size(); i++) {
     rounded_clip_rects.push_back(ProtoToSkRRect(details.rounded_rects(i)));
   }
   bool antialias = details.antialias();
@@ skipping 56 matching lines @@
         rounded_rect.radii(SkRRect::kLowerRight_Corner);
     base::StringAppendF(&value, " [%f,%f],", lower_right_radius.x(),
                         lower_right_radius.y());
     SkVector lower_left_radius = rounded_rect.radii(SkRRect::kLowerLeft_Corner);
     base::StringAppendF(&value, " [%f,%f]]", lower_left_radius.x(),
                         lower_left_radius.y());
   }
   array->AppendString(value);
 }
 
-size_t ClipDisplayItem::ExternalMemoryUsage() const {
-  return rounded_clip_rects_.capacity() * sizeof(rounded_clip_rects_[0]);
-}
+EndClipDisplayItem::EndClipDisplayItem() : DisplayItem(END_CLIP) {}
 
-EndClipDisplayItem::EndClipDisplayItem() {}
-
-EndClipDisplayItem::EndClipDisplayItem(const proto::DisplayItem& proto) {
+EndClipDisplayItem::EndClipDisplayItem(const proto::DisplayItem& proto)
+    : DisplayItem(END_CLIP) {
   DCHECK_EQ(proto::DisplayItem::Type_EndClip, proto.type());
 }
 
 EndClipDisplayItem::~EndClipDisplayItem() {
 }
 
 void EndClipDisplayItem::ToProtobuf(proto::DisplayItem* proto) const {
   proto->set_type(proto::DisplayItem::Type_EndClip);
 }
 
 void EndClipDisplayItem::Raster(SkCanvas* canvas,
                                 SkPicture::AbortCallback* callback) const {
   canvas->restore();
 }
 
 void EndClipDisplayItem::AsValueInto(
     const gfx::Rect& visual_rect,
     base::trace_event::TracedValue* array) const {
   array->AppendString(base::StringPrintf("EndClipDisplayItem visualRect: [%s]",
                                          visual_rect.ToString().c_str()));
 }
 
-size_t EndClipDisplayItem::ExternalMemoryUsage() const {
-  return 0;
-}
-
 }  // namespace cc