Remove CSSCompositing

sky/engine/core/html/canvas/Canvas2DContextAttributes.cpp

 /*
  * Copyright (c) 2013, Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
  * copyright notice, this list of conditions and the following disclaimer
@@ skipping 15 matching lines @@
 
 #include "config.h"
 
 #include "core/html/canvas/Canvas2DContextAttributes.h"
 
 #include "wtf/text/WTFString.h"
 
 namespace blink {
 
 Canvas2DContextAttributes::Canvas2DContextAttributes()
-    : m_alpha(true)
-    , m_storage(PersistentStorage)
+    : m_storage(PersistentStorage)
 {
 }
 
 DEFINE_EMPTY_DESTRUCTOR_WILL_BE_REMOVED(Canvas2DContextAttributes);
 
 PassRefPtr<Canvas2DContextAttributes> Canvas2DContextAttributes::create()
 {
     return adoptRef(new Canvas2DContextAttributes());
 }
 
-bool Canvas2DContextAttributes::alpha() const
-{
-    return m_alpha;
-}
-
-void Canvas2DContextAttributes::setAlpha(bool alpha)
-{
-    m_alpha = alpha;
-}
-
 String Canvas2DContextAttributes::storage() const
 {
     return m_storage == PersistentStorage ? "persistent" : "discardable";
 }
 
 void Canvas2DContextAttributes::setStorage(const String& storage)
 {
     if (storage == "persistent")
         m_storage = PersistentStorage;
     else if (storage == "discardable")
         m_storage = DiscardableStorage;
 }
 
 Canvas2DContextStorage Canvas2DContextAttributes::parsedStorage() const
 {
     return m_storage;
 }
 
 } // namespace blink