Beginning of support for extension content verification

chrome/browser/extensions/test_extension_system.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/extensions/test_extension_system.h"
 
 #include "base/command_line.h"
 #include "base/prefs/pref_service.h"
 #include "chrome/browser/extensions/blacklist.h"
 #include "chrome/browser/extensions/error_console/error_console.h"
@@ skipping 165 matching lines @@
 }
 
 QuotaService* TestExtensionSystem::quota_service() {
   return quota_service_.get();
 }
 
 const OneShotEvent& TestExtensionSystem::ready() const {
   return ready_;
 }
 
+ContentVerifier* TestExtensionSystem::content_verifier() {
+  return NULL;
+}
+
 // static
 KeyedService* TestExtensionSystem::Build(content::BrowserContext* profile) {
   return new TestExtensionSystem(static_cast<Profile*>(profile));
 }
 
 }  // namespace extensions