Turn the utility process image decoder into a Mojo service.

services/services_tests.gyp

+# Copyright 2015 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': {
+    'chromium_code': 1,
+  },
+  'targets': [
+    {
+      'target_name': 'services_unittests',
+      'type': '<(gtest_target_type)',
+      'dependencies': [
+        '../base/base.gyp:test_support_base',
+        '../content/content_shell_and_tests.gyp:test_support_content',
+        '../mojo/mojo_base.gyp:mojo_environment_chromium',
+        '../testing/gtest.gyp:gtest',
+        'image_decoder/image_decoder.gyp:services_image_decoder',
+      ],
+      'sources': [
+        'image_decoder/image_decoder_impl_unittest.cc',
+        'test/services_unittest_main.cc',
+      ],
+    }
+  ]
+}