Move navigations with POST or referrer to the shell.

mojo/application/public/cpp/application_impl.h

Index: mojo/application/public/cpp/application_impl.h
diff --git a/mojo/application/public/cpp/application_impl.h b/mojo/application/public/cpp/application_impl.h
index cecc934ff96ee44ad659ff6fc63b4010e84d9e4f..f7bf0e1002d20df3734b5f88248da3393d81b949 100644
--- a/mojo/application/public/cpp/application_impl.h
+++ b/mojo/application/public/cpp/application_impl.h
@@ -69,14 +69,14 @@ class ApplicationImpl : public Application {
   // or nullptr otherwise. Caller does not take ownership. The pointer remains
   // valid until an error occurs on the connection with the Shell, or until the
   // ApplicationImpl is destroyed, whichever occurs first.
-  ApplicationConnection* ConnectToApplication(const String& application_url);
+  ApplicationConnection* ConnectToApplication(mojo::URLRequestPtr request);
 
-  // Connect to application identified by |application_url| and connect to the
+  // Connect to application identified by |request->url| and connect to the
   // service implementation of the interface identified by |Interface|.
   template <typename Interface>
-  void ConnectToService(const std::string& application_url,
+  void ConnectToService(mojo::URLRequestPtr request,
                         InterfacePtr<Interface>* ptr) {
-    ConnectToApplication(application_url)->ConnectToService(ptr);
+    ConnectToApplication(request.Pass())->ConnectToService(ptr);
   }
 
   // Application implementation.