Move InterfaceProvider into the shell::mojom namespace like the rest of the shell interfaces.

mojo/shell/application_instance.cc

Index: mojo/shell/application_instance.cc
diff --git a/mojo/shell/application_instance.cc b/mojo/shell/application_instance.cc
index 6e35d31abb8d452ec2230ddba09ef22bbd481690..f194f31b2054eacd717661e620fd45fd2e800bd0 100644
--- a/mojo/shell/application_instance.cc
+++ b/mojo/shell/application_instance.cc
@@ -77,8 +77,8 @@ void ApplicationInstance::BindPIDReceiver(
 // Shell implementation:
 void ApplicationInstance::ConnectToApplication(
     URLRequestPtr app_request,
-    InterfaceRequest<InterfaceProvider> remote_interfaces,
-    InterfaceProviderPtr local_interfaces,
+    shell::mojom::InterfaceProviderRequest remote_interfaces,
+    shell::mojom::InterfaceProviderPtr local_interfaces,
     mojom::CapabilityFilterPtr filter,
     const ConnectToApplicationCallback& callback) {
   std::string url_string = app_request->url.To<std::string>();