First cut at custom user style sheets.

chrome/test/testing_profile.h

 // Copyright (c) 2010 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 CHROME_TEST_TESTING_PROFILE_H_
 #define CHROME_TEST_TESTING_PROFILE_H_
 
 #include "base/base_paths.h"
 #include "base/file_util.h"
 #include "base/path_service.h"
@@ skipping 166 matching lines @@
   virtual URLRequestContextGetter* GetRequestContext();
   void CreateRequestContext();
 
   virtual URLRequestContextGetter* GetRequestContextForMedia() { return NULL; }
   virtual URLRequestContextGetter* GetRequestContextForExtensions() {
       return NULL;
   }
 
   virtual net::SSLConfigService* GetSSLConfigService() { return NULL; }
   virtual Blacklist* GetPrivacyBlacklist() { return NULL; }
+  virtual UserStyleSheetWatcher* GetUserStyleSheetWatcher() { return NULL; }
   virtual HostContentSettingsMap* GetHostContentSettingsMap() {
     if (!host_content_settings_map_.get())
       host_content_settings_map_ = new HostContentSettingsMap(this);
     return host_content_settings_map_.get();
   }
   virtual HostZoomMap* GetHostZoomMap() { return NULL; }
   void set_session_service(SessionService* session_service);
   virtual SessionService* GetSessionService() { return session_service_.get(); }
   virtual void ShutdownSessionService() {}
   virtual bool HasSessionService() const {
@@ skipping 129 matching lines @@
 
   virtual ProfileId GetRuntimeId() {
     return original_profile_->GetRuntimeId();
   }
 
  protected:
   Profile* original_profile_;
 };
 
 #endif  // CHROME_TEST_TESTING_PROFILE_H_