Add subsetting to SkScaledCodec

bench/nanobench.cpp

 /*
  * Copyright 2014 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include <ctype.h>
 
 #include "nanobench.h"
@@ skipping 897 matching lines @@
             }
             fCurrentSubsetImage = 0;
             fUseCodec++;
         }
 
         // Run the BRDBenches
         // We will benchmark multiple BRD strategies.
         const SkBitmapRegionDecoderInterface::Strategy strategies[] = {
                 SkBitmapRegionDecoderInterface::kOriginal_Strategy,
                 SkBitmapRegionDecoderInterface::kCanvas_Strategy,
+                SkBitmapRegionDecoderInterface::kCodec_Strategy,
         };
 
         // We intend to create benchmarks that model the use cases in
         // android/libraries/social/tiledimage.  In this library, an image is decoded in 512x512
         // tiles.  The image can be translated freely, so the location of a tile may be anywhere in
         // the image.  For that reason, we will benchmark decodes in five representative locations
         // in the image.  Additionally, this use case utilizes power of two scaling, so we will
         // test on power of two sample sizes.  The output tile is always 512x512, so, when a
         // sampleSize is used, the size of the subset that is decoded is always
         // (sampleSize*512)x(sampleSize*512).
@@ skipping 362 matching lines @@
 
     return 0;
 }
 
 #if !defined SK_BUILD_FOR_IOS
 int main(int argc, char** argv) {
     SkCommandLineFlags::Parse(argc, argv);
     return nanobench_main();
 }
 #endif