Rename SkBitmapRegionDecoder and Create function

bench/BitmapRegionDecoderBench.h

 /*
  * Copyright 2015 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef BitmapRegionDecoderBench_DEFINED
 #define BitmapRegionDecoderBench_DEFINED
 
 #include "Benchmark.h"
-#include "SkBitmapRegionDecoderInterface.h"
+#include "SkBitmapRegionDecoder.h"
 #include "SkData.h"
 #include "SkImageInfo.h"
 #include "SkRefCnt.h"
 #include "SkString.h"
 
 /**
  *  Benchmark Android's BitmapRegionDecoder for a particular colorType, sampleSize, and subset.
  *
  *  fStrategy determines which of various implementations is to be used.
  *
  *  nanobench.cpp handles creating benchmarks for interesting scaled subsets.  We strive to test
  *  on real use cases.
  */
 class BitmapRegionDecoderBench : public Benchmark {
 public:
     // Calls encoded->ref()
     BitmapRegionDecoderBench(const char* basename, SkData* encoded,
-            SkBitmapRegionDecoderInterface::Strategy strategy, SkColorType colorType,
+            SkBitmapRegionDecoder::Strategy strategy, SkColorType colorType,
             uint32_t sampleSize, const SkIRect& subset);
 
 protected:
     const char* onGetName() override;
     bool isSuitableFor(Backend backend) override;
     void onDraw(int n, SkCanvas* canvas) override;
     void onDelayedSetup() override;
 
 private:
     SkString                                       fName;
-    SkAutoTDelete<SkBitmapRegionDecoderInterface>  fBRD;
+    SkAutoTDelete<SkBitmapRegionDecoder>           fBRD;
     SkAutoTUnref<SkData>                           fData;
-    const SkBitmapRegionDecoderInterface::Strategy fStrategy;
+    const SkBitmapRegionDecoder::Strategy          fStrategy;
     const SkColorType                              fColorType;
     const uint32_t                                 fSampleSize;
     const SkIRect                                  fSubset;
     typedef Benchmark INHERITED;
 };
 #endif // BitmapRegionDecoderBench_DEFINED