Adds the ability for the renderer to create the mojo channel

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': [
     '../gin/gin.gyp:gin',
     '../jingle/jingle.gyp:jingle_glue',
     '../media/media.gyp:media',
     '../net/net.gyp:net',
@@ skipping 286 matching lines @@
     'renderer/media/webmediasource_impl.cc',
     'renderer/media/webmediasource_impl.h',
     'renderer/media/websourcebuffer_impl.cc',
     'renderer/media/websourcebuffer_impl.h',
     'renderer/memory_benchmarking_extension.cc',
     'renderer/memory_benchmarking_extension.h',
     'renderer/menu_item_builder.cc',
     'renderer/menu_item_builder.h',
     'renderer/mhtml_generator.cc',
     'renderer/mhtml_generator.h',
+    'renderer/mojo/mojo_render_process_observer.cc',
+    'renderer/mojo/mojo_render_process_observer.h',
     'renderer/mouse_lock_dispatcher.cc',
     'renderer/mouse_lock_dispatcher.h',
     'renderer/notification_provider.cc',
     'renderer/notification_provider.h',
     'renderer/npapi/plugin_channel_host.cc',
     'renderer/npapi/plugin_channel_host.h',
     'renderer/npapi/webplugin_delegate_proxy.cc',
     'renderer/npapi/webplugin_delegate_proxy.h',
     'renderer/npapi/webplugin_impl.cc',
     'renderer/npapi/webplugin_impl.h',
@@ skipping 250 matching lines @@
       'sources!': [
         'renderer/webscrollbarbehavior_impl_mac.mm',
         'renderer/webscrollbarbehavior_impl_mac.h',
       ],
     }],
     ['OS=="win" and win_use_allocator_shim==1', {
       'dependencies': [
           '../base/allocator/allocator.gyp:allocator',
       ],
     }],
-    # TODO(sky): temporary until mojo runs on mac.
-    ['OS=="mac"', {
+    ['use_mojo==0', {
       'sources!': [
+        'renderer/mojo/mojo_render_process_observer.cc',
+        'renderer/mojo/mojo_render_process_observer.h',
         'renderer/web_ui_mojo.cc',
         'renderer/web_ui_mojo.h',
         'renderer/web_ui_mojo_context_state.cc',
         'renderer/web_ui_mojo_context_state.h',
         'renderer/web_ui_runner.cc',
         'renderer/web_ui_runner.h',
       ],
     }, {
       'dependencies': [
         '../mojo/mojo.gyp:mojo_environment_chromium',
@@ skipping 188 matching lines @@
     }],
   ],
   'target_conditions': [
     ['OS=="android"', {
       'sources/': [
         ['include', '^renderer/render_view_linux\\.cc$'],
       ],
     }],
   ],
 }