Let the command buffer service target directly depend on Skia in gyp.

gpu/command_buffer_service.gypi

 # Copyright (c) 2012 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 {
   'include_dirs': [
     '..',
   ],
   'all_dependent_settings': {
     'include_dirs': [
       '..',
     ],
   },
   'dependencies': [
     '../base/base.gyp:base',
     '../base/third_party/dynamic_annotations/dynamic_annotations.gyp:dynamic_annotations',
     '../crypto/crypto.gyp:crypto',
+    '../skia/skia.gyp:skia',
     '../third_party/khronos/khronos.gyp:khronos_headers',
     '../third_party/protobuf/protobuf.gyp:protobuf_lite',
     '../third_party/re2/re2.gyp:re2',
     '../third_party/smhasher/smhasher.gyp:cityhash',
     '../ui/gfx/gfx.gyp:gfx',
     '../ui/gfx/gfx.gyp:gfx_geometry',
     '../ui/gl/gl.gyp:gl',
     '../ui/gl/init/gl_init.gyp:gl_init',
     '<(angle_path)/src/angle.gyp:commit_id',
     '<(angle_path)/src/angle.gyp:translator',
@@ skipping 123 matching lines @@
       # Required by gles2_cmd_decoder.cc on Mac.
       'link_settings': {
         'libraries': [
           '$(SDKROOT)/System/Library/Frameworks/IOSurface.framework',
           '$(SDKROOT)/System/Library/Frameworks/OpenGL.framework',
         ],
       },
     }],
   ],
 }