Simplify mojo_shell since it's now only used for Mandoline.

mojo/services/view_manager/view_manager_client_apptest.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 "third_party/mojo_services/src/view_manager/public/cpp/view_manager.h"
 
 #include "base/bind.h"
 #include "base/location.h"
 #include "base/logging.h"
 #include "base/memory/scoped_vector.h"
 #include "base/message_loop/message_loop.h"
 #include "base/run_loop.h"
 #include "base/test/test_timeouts.h"
+#include "mojo/application/application_test_base_chromium.h"
 #include "mojo/public/cpp/application/application_connection.h"
 #include "mojo/public/cpp/application/application_delegate.h"
 #include "mojo/public/cpp/application/application_impl.h"
-#include "mojo/public/cpp/application/application_test_base.h"
 #include "mojo/public/cpp/application/service_provider_impl.h"
 #include "third_party/mojo_services/src/geometry/public/cpp/geometry_util.h"
 #include "third_party/mojo_services/src/view_manager/public/cpp/lib/view_manager_client_impl.h"
 #include "third_party/mojo_services/src/view_manager/public/cpp/view_manager_client_factory.h"
 #include "third_party/mojo_services/src/view_manager/public/cpp/view_manager_context.h"
 #include "third_party/mojo_services/src/view_manager/public/cpp/view_manager_delegate.h"
 #include "third_party/mojo_services/src/view_manager/public/cpp/view_observer.h"
 
 namespace mojo {
 
@@ skipping 576 matching lines @@
     view11->SetFocus();
     ASSERT_TRUE(DoRunLoopWithTimeout());
     ASSERT_NE(nullptr, observer.last_gained_focus());
     ASSERT_NE(nullptr, observer.last_lost_focus());
     EXPECT_EQ(view11->id(), observer.last_gained_focus()->id());
     EXPECT_EQ(embedded->GetRoot()->id(), observer.last_lost_focus()->id());
   }
 }
 
 }  // namespace mojo