Fix up all the easy virtual ... SK_OVERRIDE cases.

src/animator/SkDrawShader.h

 /*
  * Copyright 2006 The Android Open Source Project
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef SkDrawShader_DEFINED
 #define SkDrawShader_DEFINED
 
 #include "SkPaintPart.h"
 #include "SkShader.h"
 
 class SkBaseBitmap;
 
 class SkDrawBitmapShader : public SkDrawShader {
     DECLARE_DRAW_MEMBER_INFO(BitmapShader);
     SkDrawBitmapShader();
-    virtual bool add() SK_OVERRIDE;
-    virtual SkShader* getShader() SK_OVERRIDE;
+    bool add() SK_OVERRIDE;
+    SkShader* getShader() SK_OVERRIDE;
 protected:
     SkBool filterBitmap;
     SkBaseBitmap* image;
 private:
     typedef SkDrawShader INHERITED;
 };
 
 #endif // SkDrawShader_DEFINED