Clean up StyleBackgroundData.

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

Index: third_party/WebKit/Source/core/style/StyleBackgroundData.h
diff --git a/third_party/WebKit/Source/core/style/StyleBackgroundData.h b/third_party/WebKit/Source/core/style/StyleBackgroundData.h
index 953b41e9513f286261d22ab2b0d2a18e8c75216f..640d0ea57bd5dd70cd64c98398185093de192e37 100644
--- a/third_party/WebKit/Source/core/style/StyleBackgroundData.h
+++ b/third_party/WebKit/Source/core/style/StyleBackgroundData.h
@@ -36,7 +36,8 @@ namespace blink {
 // TODO(sashab): Move this into a private class on ComputedStyle, and remove
 // all methods on it, merging them into copy/creation methods on ComputedStyle
 // instead. Keep the allocation logic, only allocating a new object if needed.
-class CORE_EXPORT StyleBackgroundData : public RefCounted<StyleBackgroundData> {
+class CORE_EXPORT StyleBackgroundData
+    : public RefCountedCopyable<StyleBackgroundData> {
  public:
   static PassRefPtr<StyleBackgroundData> Create() {
     return AdoptRef(new StyleBackgroundData);
@@ -44,22 +45,18 @@ class CORE_EXPORT StyleBackgroundData : public RefCounted<StyleBackgroundData> {
   PassRefPtr<StyleBackgroundData> Copy() const {
     return AdoptRef(new StyleBackgroundData(*this));
   }
-  ~StyleBackgroundData() {}
 
   bool operator==(const StyleBackgroundData&) const;
   bool operator!=(const StyleBackgroundData& o) const { return !(*this == o); }
 
-  const FillLayer& Background() const { return background_; }
-  const StyleColor& GetColor() const { return color_; }
-
  private:
   friend class ComputedStyle;
 
   StyleBackgroundData();
-  StyleBackgroundData(const StyleBackgroundData&);
+  StyleBackgroundData(const StyleBackgroundData&) = default;
 
   FillLayer background_;
-  StyleColor color_;
+  StyleColor background_color_;
 };
 
 }  // namespace blink