Mojo: Use InterfaceFactory<Interface> for service registration

mojo/services/test_service/test_request_tracker_impl.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_IMPL_H_
 #define MOJO_SERVICES_TEST_SERVICE_TEST_REQUEST_TRACKER_IMPL_H_
 
 #include "base/memory/weak_ptr.h"
 #include "mojo/public/cpp/system/macros.h"
 #include "mojo/services/test_service/test_request_tracker.mojom.h"
 
 namespace mojo {
 class ApplicationConnection;
 namespace test {
 
 typedef std::map<uint64_t, std::vector<ServiceStats> > AllRecordsMap;
 
 // Shared state between all instances of TestRequestTrackerImpl
 // and the master TrackedRequestService.
 struct TrackingContext {
   TrackingContext();
   ~TrackingContext();
   AllRecordsMap records;
   std::map<uint64_t, std::string> ids_to_names;
   uint64_t next_id;
 };
 
 class TestRequestTrackerImpl : public InterfaceImpl<TestRequestTracker> {
  public:
-  TestRequestTrackerImpl(ApplicationConnection* connection,
-                         TrackingContext* context);
+  explicit TestRequestTrackerImpl(TrackingContext* context);
   virtual ~TestRequestTrackerImpl();
 
   // TestRequestTracker.
   virtual void RecordStats(uint64_t client_id,
                            ServiceStatsPtr stats) MOJO_OVERRIDE;
 
   // InterfaceImpl override.
   virtual void OnConnectionEstablished() MOJO_OVERRIDE;
 
  private:
   void UploaderNameCallback(uint64_t id, const mojo::String& name);
   TrackingContext* context_;
   base::WeakPtrFactory<TestRequestTrackerImpl> weak_factory_;
   MOJO_DISALLOW_COPY_AND_ASSIGN(TestRequestTrackerImpl);
 };
 
 class TestTrackedRequestServiceImpl
     : public InterfaceImpl<TestTrackedRequestService> {
  public:
-  TestTrackedRequestServiceImpl(
-      ApplicationConnection* connection,
-      TrackingContext* context);
+  explicit TestTrackedRequestServiceImpl(TrackingContext* context);
   virtual ~TestTrackedRequestServiceImpl();
 
   // |TestTrackedRequestService| implementation.
   virtual void GetReport(
       const mojo::Callback<void(mojo::Array<ServiceReportPtr>)>& callback)
           MOJO_OVERRIDE;
 
  private:
   TrackingContext* context_;
   MOJO_DISALLOW_COPY_AND_ASSIGN(TestTrackedRequestServiceImpl);
 };
 
 }  // namespace test
 }  // namespace mojo
 
 #endif  // MOJO_SERVICES_TEST_SERVICE_TEST_REQUEST_TRACKER_IMPL_H_