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 d9c7410e98d439554064ef8789d2a280bf58df73..7e915f53a750a12c7d2720ad45d70993510f6c41 100644
--- a/content/browser/utility_process_host_impl.h
+++ b/content/browser/utility_process_host_impl.h
@@ -26,7 +26,6 @@ class Thread;
 namespace content {
 class BrowserChildProcessHostImpl;
 class InProcessChildThreadParams;
-class MojoChildConnection;
 
 typedef base::Thread* (*UtilityMainThreadFactoryFunction)(
     const InProcessChildThreadParams&);
@@ -117,11 +116,6 @@ class CONTENT_EXPORT UtilityProcessHostImpl
   // 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_;