Adds a way to determine id of content handler that created app

content/browser/frame_host/frame_mojo_shell.h

Index: content/browser/frame_host/frame_mojo_shell.h
diff --git a/content/browser/frame_host/frame_mojo_shell.h b/content/browser/frame_host/frame_mojo_shell.h
index 5421ea126b30c75763e9bb40690f256bf0178740..b2817a0a5054b98d0022896e3584ee49058de03f 100644
--- a/content/browser/frame_host/frame_mojo_shell.h
+++ b/content/browser/frame_host/frame_mojo_shell.h
@@ -31,7 +31,8 @@ class FrameMojoShell : public mojo::Shell {
       mojo::URLRequestPtr application_url,
       mojo::InterfaceRequest<mojo::ServiceProvider> services,
       mojo::ServiceProviderPtr exposed_services,
-      mojo::CapabilityFilterPtr filter) override;
+      mojo::CapabilityFilterPtr filter,
+      const ConnectToApplicationCallback& callback) override;
   void QuitApplication() override;
 
   ServiceRegistryImpl* GetServiceRegistry();