Cleanup: Mark some overridden methods with 'SK_OVERRIDE'.

src/images/SkImageDecoder_libjpeg.cpp

 /*
  * Copyright 2007 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.
  */
 
 
 #include "SkImageDecoder.h"
 #include "SkImageEncoder.h"
@@ skipping 211 matching lines @@
         fImageIndex = NULL;
         fImageWidth = 0;
         fImageHeight = 0;
     }
 
     virtual ~SkJPEGImageDecoder() {
         SkDELETE(fImageIndex);
     }
 #endif
 
-    virtual Format getFormat() const {
+    virtual Format getFormat() const SK_OVERRIDE {
         return kJPEG_Format;
     }
 
 protected:
 #ifdef SK_BUILD_FOR_ANDROID
     virtual bool onBuildTileIndex(SkStreamRewindable *stream, int *width, int *height) SK_OVERRIDE;
     virtual bool onDecodeSubset(SkBitmap* bitmap, const SkIRect& rect) SK_OVERRIDE;
 #endif
     virtual Result onDecode(SkStream* stream, SkBitmap* bm, Mode) SK_OVERRIDE;
     virtual bool onDecodeYUV8Planes(SkStream* stream, SkISize componentSizes[3],
@@ skipping 1203 matching lines @@
     return SkImageDecoder::kUnknown_Format;
 }
 
 static SkImageEncoder* sk_libjpeg_efactory(SkImageEncoder::Type t) {
     return (SkImageEncoder::kJPEG_Type == t) ? SkNEW(SkJPEGImageEncoder) : NULL;
 }
 
 static SkImageDecoder_DecodeReg gDReg(sk_libjpeg_dfactory);
 static SkImageDecoder_FormatReg gFormatReg(get_format_jpeg);
 static SkImageEncoder_EncodeReg gEReg(sk_libjpeg_efactory);