Replace ApplicationImpl::CreateApplicationConnector() with a standalone helper function.

shell/shell_apptest.cc

 // Copyright 2015 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.
 
 #include "base/base_paths.h"
 #include "base/bind.h"
 #include "base/files/file_path.h"
 #include "base/files/file_util.h"
 #include "base/path_service.h"
 #include "base/run_loop.h"
@@ skipping 206 matching lines @@
     EXPECT_EQ(app_url, connection_url);
     EXPECT_EQ("hello", message);
     base::MessageLoop::current()->Quit();
   };
   pingable->Ping("hello", callback);
   base::RunLoop().Run();
 }
 
 TEST_F(ShellAppTest, ApplicationConnector) {
   mojo::ApplicationConnectorPtr app_connector;
-  app_connector.Bind(application_impl()->CreateApplicationConnector());
+  app_connector.Bind(
+      mojo::CreateApplicationConnector(application_impl()->shell()));
   TestApplicationConnector(app_connector.get());
 }
 
 TEST_F(ShellAppTest, ApplicationConnectorDuplicate) {
   mojo::ApplicationConnectorPtr app_connector1;
-  app_connector1.Bind(application_impl()->CreateApplicationConnector());
+  app_connector1.Bind(
+      mojo::CreateApplicationConnector(application_impl()->shell()));
   {
     SCOPED_TRACE("app_connector1");
     TestApplicationConnector(app_connector1.get());
   }
 
   mojo::ApplicationConnectorPtr app_connector2;
   app_connector1->Duplicate(GetProxy(&app_connector2));
   {
     SCOPED_TRACE("app_connector2");
     TestApplicationConnector(app_connector2.get());
   }
 
   // The first one should still work.
   {
     SCOPED_TRACE("app_connector1 again");
     TestApplicationConnector(app_connector1.get());
   }
 }
 
 }  // namespace