Revert of Establish MojoChildConnection from BrowserChildProcessHostImpl

content/browser/utility_process_host_impl.h

Index: content/browser/utility_process_host_impl.h
diff --git a/content/browser/utility_process_host_impl.h b/content/browser/utility_process_host_impl.h
index 7e915f53a750a12c7d2720ad45d70993510f6c41..d9c7410e98d439554064ef8789d2a280bf58df73 100644
--- a/content/browser/utility_process_host_impl.h
+++ b/content/browser/utility_process_host_impl.h
@@ -26,6 +26,7 @@
 namespace content {
 class BrowserChildProcessHostImpl;
 class InProcessChildThreadParams;
+class MojoChildConnection;
 
 typedef base::Thread* (*UtilityMainThreadFactoryFunction)(
     const InProcessChildThreadParams&);
@@ -116,6 +117,11 @@
   // Used in single-process mode instead of process_.
   std::unique_ptr<base::Thread> in_process_thread_;
 
+  // Browser-side Mojo endpoint which sets up a Mojo channel with the child
+  // process and contains the browser's shell::InterfaceRegistry.
+  const std::string child_token_;
+  std::unique_ptr<MojoChildConnection> mojo_child_connection_;
+
   // Used to vend weak pointers, and should always be declared last.
   base::WeakPtrFactory<UtilityProcessHostImpl> weak_ptr_factory_;