Move interface registration to OnConnect in RPH

content/public/browser/browser_context.h

Index: content/public/browser/browser_context.h
diff --git a/content/public/browser/browser_context.h b/content/public/browser/browser_context.h
index 05f80861400fb6f69bc88d6b2b777395b3c87341..035dea9a2b7e007c43c6202f2226c34dc43f59c7 100644
--- a/content/public/browser/browser_context.h
+++ b/content/public/browser/browser_context.h
@@ -54,6 +54,7 @@ class BrowserPluginGuestManager;
 class DownloadManager;
 class DownloadManagerDelegate;
 class IndexedDBContext;
+class MojoShellConnection;
 class PermissionManager;
 class PushMessagingService;
 class ResourceContext;
@@ -167,6 +168,9 @@ class CONTENT_EXPORT BrowserContext : public base::SupportsUserData {
   static shell::Connector* GetShellConnectorFor(
       BrowserContext* browser_context);
 
+  static MojoShellConnection* GetMojoShellConnectionFor(
+      BrowserContext* browser_context);
+
   ~BrowserContext() override;
 
   // Creates a delegate to initialize a HostZoomMap and persist its information.