Add abstractions that let embedders drive tests of WebContents.

chrome/browser/ui/webui/sync_internals_ui_unittest.cc

 // 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.
 
 #include "chrome/browser/ui/webui/sync_internals_ui.h"
 
 #include <cstddef>
 #include <string>
 
 #include "base/message_loop.h"
 #include "base/utf_string_conversions.h"
 #include "base/values.h"
 #include "chrome/browser/sync/profile_sync_service_mock.h"
 #include "chrome/test/base/chrome_render_view_host_test_harness.h"
 #include "chrome/test/base/profile_mock.h"
-#include "content/browser/tab_contents/test_tab_contents.h"
 #include "content/public/browser/web_ui_controller.h"
 #include "content/test/test_browser_thread.h"
 #include "sync/js/js_arg_list.h"
 #include "sync/js/js_event_details.h"
 #include "sync/js/js_test_util.h"
 #include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 // Rewrite to use WebUI testing infrastructure. Current code below is mostly
 // testing how WebUI concrete class serializes function parameters, and that
@@ skipping 184 matching lines @@
               ExecuteJavascript(ASCIIToUTF16(kAboutInfoCall)));
 
   ListValue args;
   sync_internals_ui_->OverrideHandleWebUIMessage(
       GURL(), "getAboutInfo", args);
 }
 
 }  // namespace
 
 */