Move SkBitmapRegionDecoder to include/android and src/android

gyp/skia_lib.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.
 # The minimal set of static libraries for basic Skia functionality.
 
 {
   'variables': {
     'component_libs': [
       'core.gyp:core',
       'codec.gyp:codec',
+      'codec_android.gyp:codec_android',
       'effects.gyp:effects',
       'images.gyp:images',
       'opts.gyp:opts',
       'ports.gyp:ports',
       'sfnt.gyp:sfnt',
       'utils.gyp:utils',
     ],
     'conditions': [
       [ '"x86" in skia_arch_type and skia_os != "android"', {
         'component_libs': [
@@ skipping 36 matching lines @@
       ],
       'dependencies': [
         '<@(component_libs)',
       ],
       'export_dependent_settings': [
         '<@(component_libs)',
       ],
     },
   ],
 }