Add mojo::Binding<Interface> for more flexible pipe<->impl binding

mojo/services/test_service/test_request_tracker_application.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef MOJO_SERVICES_TEST_SERVICE_TEST_REQUEST_TRACKER_APPLICATION_H_
 #define MOJO_SERVICES_TEST_SERVICE_TEST_REQUEST_TRACKER_APPLICATION_H_
 
 #include "mojo/public/cpp/application/application_delegate.h"
 #include "mojo/public/cpp/application/interface_factory_impl.h"
 #include "mojo/public/cpp/system/macros.h"
 #include "mojo/services/test_service/test_request_tracker_impl.h"
 
 namespace mojo {
 namespace test {
 class TestTimeService;
 
 // Embeds TestRequestTracker mojo services into an application.
-class TestRequestTrackerApplication : public ApplicationDelegate,
-                                      public InterfaceFactory<TestTimeService> {
+class TestRequestTrackerApplication
+    : public ApplicationDelegate,
+      public InterfaceFactory<TestTimeService>,
+      public InterfaceFactory<TestRequestTracker> {
  public:
   TestRequestTrackerApplication();
   ~TestRequestTrackerApplication() override;
 
   // ApplicationDelegate methods:
   bool ConfigureIncomingConnection(ApplicationConnection* connection) override;
 
   // InterfaceFactory<TestTimeService> methods:
   void Create(ApplicationConnection* connection,
               InterfaceRequest<TestTimeService> request) override;
 
+  // InterfaceFactory<TestRequestTracker> methods:
+  void Create(ApplicationConnection* connection,
+              InterfaceRequest<TestRequestTracker> request) override;
+
  private:
   TrackingContext context_;
   typedef InterfaceFactoryImplWithContext<TestTrackedRequestServiceImpl,
                                           TrackingContext>
       TestTrackedRequestFactory;
   TestTrackedRequestFactory test_tracked_request_factory_;
-  typedef InterfaceFactoryImplWithContext<TestRequestTrackerImpl,
-                                          TrackingContext>
-      TestRequestTrackerFactory;
-  TestRequestTrackerFactory test_request_tracker_factory_;
   MOJO_DISALLOW_COPY_AND_ASSIGN(TestRequestTrackerApplication);
 };
 
 }  // namespace test
 }  // namespace mojo
 
 #endif  // MOJO_SERVICES_TEST_SERVICE_TEST_REQUEST_TRACKER_APPLICATION_H_