Add content-security-policy (CSP) to chrome://flags.

chrome/browser/ui/webui/chrome_web_ui_data_source.h

 // 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.
 
 #ifndef CHROME_BROWSER_UI_WEBUI_CHROME_WEB_UI_DATA_SOURCE_H_
 #define CHROME_BROWSER_UI_WEBUI_CHROME_WEB_UI_DATA_SOURCE_H_
 #pragma once
 
 #include <string>
 
 #include "base/basictypes.h"
 #include "base/values.h"
 #include "chrome/browser/ui/webui/chrome_url_data_manager.h"
 
 // A data source that can help with implementing the common operations
 // needed by the chrome WEBUI settings/history/downloads pages.
 class ChromeWebUIDataSource : public ChromeURLDataManager::DataSource {
  public:
   explicit ChromeWebUIDataSource(const std::string& source_name);
 
+  // Adds a string and its equivalent to our dictionary.
+  void AddString(const std::string& name, const string16& value);
+
   // Adds a name and its equivaled localized string to our dictionary.
   void AddLocalizedString(const std::string& name, int ids);
 
   // Completes a request by sending our dictionary of localized strings.
   void SendLocalizedStringsAsJSON(int request_id);
 
   // Completes a request by sending the file specified by |idr|.
   void SendFromResourceBundle(int request_id, int idr);
 
  protected:
   virtual ~ChromeWebUIDataSource();
 
  private:
   DictionaryValue localized_strings_;
   DISALLOW_COPY_AND_ASSIGN(ChromeWebUIDataSource);
 };
 
 
 #endif  // CHROME_BROWSER_UI_WEBUI_CHROME_WEB_UI_DATA_SOURCE_H_