Revert of Delete SkImageDecoder

src/android/SkBitmapRegionDecoder.cpp

 /*
  * Copyright 2015 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkBitmapRegionCanvas.h"
 #include "SkBitmapRegionCodec.h"
 #include "SkBitmapRegionDecoder.h"
 #include "SkAndroidCodec.h"
 #include "SkCodec.h"
 #include "SkCodecPriv.h"
+#include "SkImageDecoder.h"
 
 SkBitmapRegionDecoder* SkBitmapRegionDecoder::Create(
         SkData* data, Strategy strategy) {
     return SkBitmapRegionDecoder::Create(new SkMemoryStream(data),
             strategy);
 }
 
 SkBitmapRegionDecoder* SkBitmapRegionDecoder::Create(
         SkStreamRewindable* stream, Strategy strategy) {
     SkAutoTDelete<SkStreamRewindable> streamDeleter(stream);
@@ skipping 42 matching lines @@
                     return nullptr;
             }
 
             return new SkBitmapRegionCodec(codec.release());
         }
         default:
             SkASSERT(false);
             return nullptr;
     }
 }