Embed a simple Mojo shell in content

content/browser/browser_main_loop.h

Index: content/browser/browser_main_loop.h
diff --git a/content/browser/browser_main_loop.h b/content/browser/browser_main_loop.h
index 0a9e387eef262c50034e9ef9233651f5be02b106..bd05de425729e0d0fab5f1a4628a3810782dd8cb 100644
--- a/content/browser/browser_main_loop.h
+++ b/content/browser/browser_main_loop.h
@@ -47,6 +47,7 @@ class BrowserOnlineStateObserver;
 class BrowserShutdownImpl;
 class BrowserThreadImpl;
 class MediaStreamManager;
+class MojoShellContext;
 class ResourceDispatcherHostImpl;
 class SpeechRecognitionManagerImpl;
 class StartupTaskRunner;
@@ -200,6 +201,7 @@ class CONTENT_EXPORT BrowserMainLoop {
   scoped_ptr<ResourceDispatcherHostImpl> resource_dispatcher_host_;
   scoped_ptr<SpeechRecognitionManagerImpl> speech_recognition_manager_;
   scoped_ptr<TimeZoneMonitor> time_zone_monitor_;
+  scoped_ptr<MojoShellContext> mojo_shell_context_;
 
   // Members initialized in |RunMainMessageLoopParts()| ------------------------
   scoped_ptr<BrowserProcessSubThread> db_thread_;