Stop linking in the old Mojo EDK.

content/test/content_test_suite.h

 // Copyright (c) 2012 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 CONTENT_TEST_CONTENT_TEST_SUITE_H_
 #define CONTENT_TEST_CONTENT_TEST_SUITE_H_
 
 #include "base/compiler_specific.h"
 #include "base/macros.h"
+#include "base/test/test_io_thread.h"
 #include "build/build_config.h"
 #include "content/public/test/content_test_suite_base.h"
 
 #if defined(OS_WIN)
 #include "base/win/scoped_com_initializer.h"
 #endif
 
 #if defined(USE_OZONE)
 namespace ui {
 class ClientNativePixmapFactory;
 }  // namespace ui
 #endif
 
 namespace content {
 
 class ContentTestSuite : public ContentTestSuiteBase {
  public:
   ContentTestSuite(int argc, char** argv);
   ~ContentTestSuite() override;
 
  protected:
   void Initialize() override;
 
  private:
+  base::TestIOThread test_io_thread_;
 #if defined(OS_WIN)
   base::win::ScopedCOMInitializer com_initializer_;
 #endif
 #if defined(USE_OZONE)
   scoped_ptr<ui::ClientNativePixmapFactory> client_native_pixmap_factory_;
 #endif
 
   DISALLOW_COPY_AND_ASSIGN(ContentTestSuite);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_TEST_CONTENT_TEST_SUITE_H_