Convert the utility process image decoder into a Mojo service.

chrome/chrome_common.gypi

 # Copyright (c) 2013 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.
 
 {
   'variables': {
     # File lists shared with GN build.
     'chrome_common_sources': [
       'common/all_messages.h',
       'common/attrition_experiments.h',
@@ skipping 613 matching lines @@
       'includes': [ '../build/protoc.gypi' ],
     },
     {
       # GN version: //chrome/common:mojo_bindings
       'target_name': 'common_mojo_bindings',
       'type': 'static_library',
       'includes': [
         '../mojo/mojom_bindings_generator.gypi'
       ],
       'sources': [
+        'common/image_decoder.mojom',
         'common/resource_usage_reporter.mojom',
       ],
       'dependencies': [
         '../mojo/mojo_public.gyp:mojo_cpp_bindings',
+        '../skia/skia.gyp:skia_mojo',
       ],
     },
   ],
 }