Create a scanline decoder without creating a codec

gyp/codec.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 codec project.
@@ skipping 26 matching lines @@
         '../src/codec/SkCodec_libgif.cpp',
         '../src/codec/SkCodec_libico.cpp',
         '../src/codec/SkCodec_libpng.cpp',
         '../src/codec/SkCodec_wbmp.cpp',
         '../src/codec/SkGifInterlaceIter.cpp',
         '../src/codec/SkJpegCodec.cpp',
         '../src/codec/SkJpegDecoderMgr.cpp',
         '../src/codec/SkJpegUtility_codec.cpp',
         '../src/codec/SkMaskSwizzler.cpp',
         '../src/codec/SkMasks.cpp',
+        '../src/codec/SkScanlineDecoder.cpp',
         '../src/codec/SkSwizzler.cpp',
         '../src/codec/SkWebpCodec.cpp',
       ],
       'direct_dependent_settings': {
         'include_dirs': [
           '../include/codec',
         ],
       },
       'conditions': [
         [ 'skia_android_framework == 1',
@@ skipping 22 matching lines @@
             ],
             'cflags': [
               '-DTURBO_HAS_SKIP',
             ],
           }
         ]
       ]
     },
   ],
 }