Add AndroidCodecBench to time scaled decodes

bench/AndroidCodecBench.h

 /*
- * Copyright 2015 Google Inc.
+ * Copyright 2016 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
-#ifndef CodecBench_DEFINED
-#define CodecBench_DEFINED
+#ifndef AndroidCodecBench_DEFINED
+#define AndroidCodecBench_DEFINED
 
 #include "Benchmark.h"
 #include "SkData.h"
 #include "SkImageInfo.h"
 #include "SkRefCnt.h"
 #include "SkString.h"
 
 /**
- *  Time SkCodec.
+ *  Time SkAndroidCodec.
  */
-class CodecBench : public Benchmark {
+class AndroidCodecBench : public Benchmark {
 public:
     // Calls encoded->ref()
-    CodecBench(SkString basename, SkData* encoded, SkColorType colorType, SkAlphaType alphaType);
+    AndroidCodecBench(SkString basename, SkData* encoded, int sampleSize);
 
 protected:
     const char* onGetName() override;
     bool isSuitableFor(Backend backend) override;
     void onDraw(int n, SkCanvas* canvas) override;
     void onDelayedSetup() override;
 
 private:
     SkString                fName;
-    const SkColorType       fColorType;
-    const SkAlphaType       fAlphaType;
     SkAutoTUnref<SkData>    fData;
+    const int               fSampleSize;
     SkImageInfo             fInfo;          // Set in onDelayedSetup.
-    SkAutoMalloc            fPixelStorage;
+    SkAutoMalloc            fPixelStorage;  // Set in onDelayedSetup.
     typedef Benchmark INHERITED;
 };
-#endif // CodecBench_DEFINED
+#endif // AndroidCodecBench_DEFINED