Add nanobench tests for BitmapRegionDecoder

dm/DM.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 "CrashHandler.h"
 #include "DMJsonWriter.h"
 #include "DMSrcSink.h"
 #include "DMSrcSinkAndroid.h"
 #include "OverwriteLine.h"
 #include "ProcStats.h"
 #include "SkBBHFactory.h"
 #include "SkChecksum.h"
 #include "SkCodec.h"
+#include "SkCodecTools.h"
 #include "SkCommonFlags.h"
 #include "SkFontMgr.h"
 #include "SkForceLinking.h"
 #include "SkGraphics.h"
 #include "SkMD5.h"
 #include "SkMutex.h"
 #include "SkOSFile.h"
 #include "SkTHash.h"
 #include "SkTaskGroup.h"
 #include "SkThreadUtils.h"
@@ skipping 357 matching lines @@
             break;
         case CodecSrc::kGrayscale_Always_DstColorType:
             folder.append("_kGray");
             break;
         default:
             SkASSERT(false);
             return;
     }
 
     if (1 != sampleSize) {
-        folder.appendf("_%.3f", BRDSrc::GetScale(sampleSize));
+        folder.appendf("_%.3f", get_scale_from_sample_size(sampleSize));
     }
 
     BRDSrc* src = new BRDSrc(path, strategy, mode, dstColorType, sampleSize);
     push_src("image", folder, src);
 }
 
 static void push_brd_srcs(Path path) {
 
     const SkBitmapRegionDecoderInterface::Strategy strategies[] = {
             SkBitmapRegionDecoderInterface::kCanvas_Strategy,
@@ skipping 689 matching lines @@
     }
     return 0;
 }
 
 #if !defined(SK_BUILD_FOR_IOS)
 int main(int argc, char** argv) {
     SkCommandLineFlags::Parse(argc, argv);
     return dm_main();
 }
 #endif