Enable sync for the settings from the Extension Settings API.

chrome/test/base/testing_profile.cc

 // Copyright (c) 2011 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/test/base/testing_profile.h"
 
 #include "build/build_config.h"
 
 #include "base/base_paths.h"
 #include "base/command_line.h"
@@ skipping 332 matching lines @@
 
   extension_pref_value_map_.reset(new ExtensionPrefValueMap);
   // Note that the GetPrefs() creates a TestingPrefService, therefore
   // the extension controlled pref values set in extension_prefs_
   // are not reflected in the pref service. One would need to
   // inject a new ExtensionPrefStore(extension_pref_value_map_.get(), false).
   extension_prefs_.reset(
       new ExtensionPrefs(GetPrefs(),
                          install_directory,
                          extension_pref_value_map_.get()));
-  extension_settings_ =
-      new ExtensionSettings(GetPath().AppendASCII("Extension Settings"));
   extension_service_.reset(new ExtensionService(this,
                                                 command_line,
                                                 install_directory,
                                                 extension_prefs_.get(),
-                                                extension_settings_.get(),
                                                 autoupdate_enabled,
                                                 true));
   return extension_service_.get();
 }
 
 FilePath TestingProfile::GetPath() {
   return profile_path_;
 }
 
 TestingPrefService* TestingProfile::GetTestingPrefService() {
@@ skipping 423 matching lines @@
 quota::SpecialStoragePolicy* TestingProfile::GetSpecialStoragePolicy() {
   return GetExtensionSpecialStoragePolicy();
 }
 
 void TestingProfile::DestroyWebDataService() {
   if (!web_data_service_.get())
     return;
 
   web_data_service_->Shutdown();
 }