Move SkBitmapRegionDecoder to include/android and src/android

src/android/SkBitmapRegionCodec.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 "SkAndroidCodec.h"
 #include "SkBitmapRegionCodec.h"
 #include "SkBitmapRegionDecoderPriv.h"
@@ skipping 126 matching lines @@
 
     return true;
 }
 
 bool SkBitmapRegionCodec::conversionSupported(SkColorType colorType) {
     // FIXME: Call virtual function when it lands.
     SkImageInfo info = SkImageInfo::Make(0, 0, colorType, fCodec->getInfo().alphaType(),
             fCodec->getInfo().profileType());
     return conversion_possible(info, fCodec->getInfo());
 }