Mojo: Replace RemotePtr with InterfacePtr and InterfaceImpl

content/child/child_thread.h

Index: content/child/child_thread.h
diff --git a/content/child/child_thread.h b/content/child/child_thread.h
index 8887e7af753ffa35f31501b7faaec2ff1db768a8..1b04830763bf9462bca12913bc9838c6a0f834e9 100644
--- a/content/child/child_thread.h
+++ b/content/child/child_thread.h
@@ -58,7 +58,7 @@ struct RequestInfo;
 // The main thread of a child process derives from this class.
 class CONTENT_EXPORT ChildThread : public IPC::Listener,
                                    public IPC::Sender,
-                                   public mojo::ShellClient {
+                                   public NON_EXPORTED_BASE(mojo::ShellClient) {
  public:
   // Creates the thread.
   ChildThread();