bindings: Makes CSSRule inherit from ScriptWrappable.

Source/core/css/CSSRule.cpp

Index: Source/core/css/CSSRule.cpp
diff --git a/Source/core/css/CSSRule.cpp b/Source/core/css/CSSRule.cpp
index 74c1e89620ac72104a29a052e21e27570108a995..426b7681d36f67a0fb6bc56bff35c6969257b92c 100644
--- a/Source/core/css/CSSRule.cpp
+++ b/Source/core/css/CSSRule.cpp
@@ -29,19 +29,7 @@
 
 namespace blink {
 
-// VC++ 2013 doesn't support EBCO (Empty Base Class Optimization), and having
-// multiple empty base classes makes the size of CSSRule bloat (Note that both
-// of GarbageCollectedFinalized and ScriptWrappableBase are empty classes).
-// See the following article for details.
-// http://social.msdn.microsoft.com/forums/vstudio/en-US/504c6598-6076-4acf-96b6-e6acb475d302/vc-multiple-inheritance-empty-base-classes-bloats-object-size
-//
-// FIXME: Remove ScriptWrappableBase from the base class list once VC++'s issue
-// gets fixed.
-// Note that we're going to split CSSRule class into two classes; CSSOMRule
-// (assumed name) which derives ScriptWrappable and CSSRule (new one) which
-// doesn't derive ScriptWrappable or ScriptWrappableBase. Then, we can safely
-// remove ScriptWrappableBase from the base class list.
-struct SameSizeAsCSSRule : public RefCountedWillBeGarbageCollectedFinalized<SameSizeAsCSSRule>, public ScriptWrappableBase {
+struct SameSizeAsCSSRule : public RefCountedWillBeGarbageCollectedFinalized<SameSizeAsCSSRule>, public ScriptWrappable {
     virtual ~SameSizeAsCSSRule();
     unsigned char bitfields;
     void* pointerUnion;