Extract a Connector interface from Shell that can be cloned & passed to other threads

mojo/shell/tests/application_manager_unittest.cc

 // 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.
 
 #include "mojo/shell/application_manager.h"
 
 #include <utility>
 
 #include "base/at_exit.h"
 #include "base/bind.h"
@@ skipping 584 matching lines @@
 
 TEST_F(ApplicationManagerTest, TestEndApplicationClosure) {
   ClosingApplicationLoader* loader = new ClosingApplicationLoader();
   application_manager_->SetLoaderForURL(
       scoped_ptr<ApplicationLoader>(loader), GURL("test:test"));
 
   bool called = false;
   scoped_ptr<ConnectParams> params(new ConnectParams);
   params->set_source(CreateShellIdentity());
   params->set_target(
-      Identity(GURL("test:test"), "", mojom::Shell::kUserRoot,
+      Identity(GURL("test:test"), "", mojom::Connector::kUserRoot,
                GetPermissiveCapabilityFilter()));
   application_manager_->SetInstanceQuitCallback(
       base::Bind(&QuitClosure, params->target(), &called));
   application_manager_->Connect(std::move(params));
   loop_.Run();
   EXPECT_TRUE(called);
 }
 
 TEST_F(ApplicationManagerTest, SameIdentityShouldNotCauseDuplicateLoad) {
   // 1 because ApplicationManagerTest connects once at startup.
   EXPECT_EQ(1, test_loader_->num_loads());
 
   TestServicePtr test_service;
   ConnectToInterface(GURL("test:foo"), &test_service);
   EXPECT_EQ(2, test_loader_->num_loads());
 
   // Exactly the same URL as above.
   ConnectToInterface(GURL("test:foo"), &test_service);
   EXPECT_EQ(2, test_loader_->num_loads());
 
   // A different identity because the domain is different.
   ConnectToInterface(GURL("test:bar"), &test_service);
   EXPECT_EQ(3, test_loader_->num_loads());
 }
 
 }  // namespace test
 }  // namespace shell
 }  // namespace mojo