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

src/images/SkImageEncoder_argb.cpp

 /*
  * Copyright 2013 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkImageEncoder.h"
 #include "SkBitmap.h"
 #include "SkColorPriv.h"
 #include "SkStream.h"
 #include "SkTemplates.h"
 
 class SkARGBImageEncoder : public SkImageEncoder {
 protected:
-    virtual bool onEncode(SkWStream* stream, const SkBitmap& bm, int quality) SK_OVERRIDE;
+    bool onEncode(SkWStream* stream, const SkBitmap& bm, int quality) SK_OVERRIDE;
 
 private:
     typedef SkImageEncoder INHERITED;
 };
 
 typedef void (*ScanlineImporter)(const uint8_t* in, uint8_t* argb, int width,
                                  const SkPMColor* SK_RESTRICT ctable);
 
 static void ARGB_8888_To_ARGB(const uint8_t* in, uint8_t* argb, int width, const SkPMColor*) {
   const uint32_t* SK_RESTRICT src = (const uint32_t*)in;
@@ skipping 81 matching lines @@
         stream->write(argb, argbStride);
     }
 
     return true;
 }
 
 
 ///////////////////////////////////////////////////////////////////////////////
 DEFINE_ENCODER_CREATOR(ARGBImageEncoder);
 ///////////////////////////////////////////////////////////////////////////////