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

src/lazy/SkDiscardablePixelRef.h

 /*
  * Copyright 2013 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef SkDiscardablePixelRef_DEFINED
 #define SkDiscardablePixelRef_DEFINED
 
 #include "SkDiscardableMemory.h"
 #include "SkImageGenerator.h"
 #include "SkImageInfo.h"
 #include "SkPixelRef.h"
 
 /**
  *  A PixelRef backed by SkDiscardableMemory, with the ability to
  *  re-generate the pixels (via a SkImageGenerator) if the DM is
  *  purged.
  */
 class SkDiscardablePixelRef : public SkPixelRef {
 public:
     SK_DECLARE_INST_COUNT(SkDiscardablePixelRef)
 
 protected:
     ~SkDiscardablePixelRef();
 
-    virtual bool onNewLockPixels(LockRec*) SK_OVERRIDE;
-    virtual void onUnlockPixels() SK_OVERRIDE;
-    virtual bool onLockPixelsAreWritable() const SK_OVERRIDE { return false; }
+    bool onNewLockPixels(LockRec*) SK_OVERRIDE;
+    void onUnlockPixels() SK_OVERRIDE;
+    bool onLockPixelsAreWritable() const SK_OVERRIDE { return false; }
 
-    virtual SkData* onRefEncodedData() SK_OVERRIDE {
+    SkData* onRefEncodedData() SK_OVERRIDE {
         return fGenerator->refEncodedData();
     }
 
 private:
     SkImageGenerator* const fGenerator;
     SkDiscardableMemory::Factory* const fDMFactory;
     const size_t fRowBytes;
     // These const members should not change over the life of the
     // PixelRef, since the SkBitmap doesn't expect them to change.
 
@@ skipping 12 matching lines @@
         return fGenerator->getYUV8Planes(sizes, planes, rowBytes, colorSpace);
     }
 
     friend bool SkInstallDiscardablePixelRef(SkImageGenerator*, SkBitmap*,
                                              SkDiscardableMemory::Factory*);
 
     typedef SkPixelRef INHERITED;
 };
 
 #endif  // SkDiscardablePixelRef_DEFINED