Move interface registration to OnConnect in RPH

content/child/child_thread_impl.h

Index: content/child/child_thread_impl.h
diff --git a/content/child/child_thread_impl.h b/content/child/child_thread_impl.h
index a68a63924d3fdfd99d43f1cb64c0498bf9046169..67e7a29988c99528bb1f5906820e500c1dca4022 100644
--- a/content/child/child_thread_impl.h
+++ b/content/child/child_thread_impl.h
@@ -40,6 +40,10 @@ class ScopedIPCSupport;
 }  // namespace edk
 }  // namespace mojo
 
+namespace shell {
+class Connection;
+}
+
 namespace blink {
 class WebFrame;
 }  // namespace blink
@@ -255,6 +259,7 @@ class CONTENT_EXPORT ChildThreadImpl
   std::unique_ptr<shell::InterfaceRegistry> interface_registry_;
   std::unique_ptr<shell::InterfaceProvider> remote_interfaces_;
   std::unique_ptr<MojoShellConnection> mojo_shell_connection_;
+  std::unique_ptr<shell::Connection> browser_connection_;
 
   std::string channel_name_;
   std::unique_ptr<IPC::SyncChannel> channel_;