Add a Javascript wrapper around ServiceRegistry and expose it to WebUI.

content/content_renderer.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.
 
 {
   'dependencies': [
     'content_common_mojo_bindings',
     '../gin/gin.gyp:gin',
     '../jingle/jingle.gyp:jingle_glue',
     '../media/media.gyp:media',
@@ skipping 48 matching lines @@
       'public/renderer/render_process_observer.cc',
       'public/renderer/render_process_observer.h',
       'public/renderer/render_thread.cc',
       'public/renderer/render_thread.h',
       'public/renderer/render_view.h',
       'public/renderer/render_view_observer.cc',
       'public/renderer/render_view_observer.h',
       'public/renderer/render_view_observer_tracker.h',
       'public/renderer/render_view_visitor.h',
       'public/renderer/resource_fetcher.h',
+      'public/renderer/service_registry_js.h',
       'public/renderer/v8_value_converter.h',
       'public/renderer/video_encode_accelerator.cc',
       'public/renderer/video_encode_accelerator.h',
       'public/renderer/web_preferences.h',
     ],
     'private_renderer_sources': [
       'renderer/accessibility/blink_ax_enum_conversion.cc',
       'renderer/accessibility/blink_ax_enum_conversion.h',
       'renderer/accessibility/blink_ax_tree_source.cc',
       'renderer/accessibility/blink_ax_tree_source.h',
@@ skipping 292 matching lines @@
       'renderer/sad_plugin.cc',
       'renderer/sad_plugin.h',
       'renderer/savable_resources.cc',
       'renderer/savable_resources.h',
       'renderer/screen_orientation/mock_screen_orientation_controller.cc',
       'renderer/screen_orientation/mock_screen_orientation_controller.h',
       'renderer/screen_orientation/screen_orientation_dispatcher.cc',
       'renderer/screen_orientation/screen_orientation_dispatcher.h',
       'renderer/scoped_clipboard_writer_glue.cc',
       'renderer/scoped_clipboard_writer_glue.h',
+      'renderer/service_registry_js_wrapper.cc',
+      'renderer/service_registry_js_wrapper.h',
       'renderer/service_worker/embedded_worker_context_client.cc',
       'renderer/service_worker/embedded_worker_context_client.h',
       'renderer/service_worker/embedded_worker_context_message_filter.cc',
       'renderer/service_worker/embedded_worker_context_message_filter.h',
       'renderer/service_worker/embedded_worker_devtools_agent.cc',
       'renderer/service_worker/embedded_worker_devtools_agent.h',
       'renderer/service_worker/embedded_worker_dispatcher.cc',
       'renderer/service_worker/embedded_worker_dispatcher.h',
       'renderer/service_worker/service_worker_script_context.cc',
       'renderer/service_worker/service_worker_script_context.h',
@@ skipping 445 matching lines @@
     }],
   ],
   'target_conditions': [
     ['OS=="android"', {
       'sources/': [
         ['include', '^renderer/render_view_linux\\.cc$'],
       ],
     }],
   ],
 }