Delete SkBitmapRegionCanvas

gyp/codec_android.gyp

 # Copyright 2015 Google Inc.
 #
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 # Copyright 2015 Google Inc.
 #
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 # GYP file for android specific codecs.
 {
   'targets': [
     {
       'target_name': 'codec_android',
       'product_name': 'skia_codec_android',
       'type': 'static_library',
       'standalone_static_library': 1,
       'dependencies': [
         'codec.gyp:codec',
       ],
       'include_dirs': [
         '../include/android',
         '../include/config',
         '../include/core',
         '../include/private',
         '../src/android',
         '../src/codec',
       ],
       'sources': [
-        '../src/android/SkBitmapRegionCanvas.cpp',
         '../src/android/SkBitmapRegionCodec.cpp',
         '../src/android/SkBitmapRegionDecoder.cpp',
       ],
       'direct_dependent_settings': {
         'include_dirs': [
           '../include/android',
         ],
       },
     },
   ],
 }