Use possible read_partial_scanlines() API in SkJpegCodec

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 44 matching lines @@
         '../src/codec/SkWebpAdapterCodec.cpp',
         '../src/codec/SkWebpCodec.cpp',
       ],
       'direct_dependent_settings': {
         'include_dirs': [
           '../include/codec',
         ],
       },
       'defines': [
         'TURBO_HAS_SKIP',
+        'TURBO_HAS_SUBSET',
       ],
     },
   ],
 }