Revert of mojo: Delay ApplicationTestBase shell disconnection.

mojo/shell/public/cpp/application_test_base.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_SHELL_PUBLIC_CPP_APPLICATION_TEST_BASE_H_
 #define MOJO_SHELL_PUBLIC_CPP_APPLICATION_TEST_BASE_H_
 
 #include "base/memory/scoped_ptr.h"
 #include "mojo/public/cpp/bindings/array.h"
 #include "mojo/public/cpp/bindings/string.h"
@@ skipping 57 matching lines @@
   void SetUp() override;
   void TearDown() override;
 
   // True by default, which indicates a MessageLoop will automatically be
   // created for the application.  Tests may override this function to prevent
   // a default loop from being created.
   virtual bool ShouldCreateDefaultRunLoop();
 
  private:
   scoped_ptr<TestHelper> test_helper_;
-  bool use_default_run_loop_ = false;
 
   MOJO_DISALLOW_COPY_AND_ASSIGN(ApplicationTestBase);
 };
 
 }  // namespace test
 
 }  // namespace mojo
 
 #endif  // MOJO_SHELL_PUBLIC_CPP_APPLICATION_TEST_BASE_H_