Clean up StyleBackgroundData.

third_party/WebKit/Source/core/style/StyleBackgroundData.cpp

 /*
  * Copyright (C) 1999 Antti Koivisto (koivisto@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Library General Public License for more details.
  *
  * You should have received a copy of the GNU Library General Public License
  * along with this library; see the file COPYING.LIB.  If not, write to
  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  * Boston, MA 02110-1301, USA.
  *
  */
 
 #include "core/style/StyleBackgroundData.h"
 
 #include "core/style/ComputedStyle.h"
 #include "core/style/ComputedStyleConstants.h"
 
 namespace blink {
 
 StyleBackgroundData::StyleBackgroundData()
-    : background_(kBackgroundFillLayer, true),
-      color_(ComputedStyle::InitialBackgroundColor()) {}
+    : background_(FillLayer(kBackgroundFillLayer, true)),
+      background_color_(Color::kTransparent) {}
 
-StyleBackgroundData::StyleBackgroundData(const StyleBackgroundData& o)
-    : RefCounted<StyleBackgroundData>(),
-      background_(o.background_),
-      color_(o.color_) {}
-
-bool StyleBackgroundData::operator==(const StyleBackgroundData& o) const {
-  return background_ == o.background_ && color_ == o.color_;
+bool StyleBackgroundData::operator==(const StyleBackgroundData& other) const {
+  return background_ == other.background_ &&
+         background_color_ == other.background_color_;
 }
 
 }  // namespace blink