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

chrome/browser/ui/webui/chrome_web_ui_data_source.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/browser/ui/webui/chrome_web_ui_data_source.h"
 
 #include <string>
 
 #include "base/memory/ref_counted_memory.h"
 #include "chrome/common/jstemplate_builder.h"
 #include "ui/base/l10n/l10n_util.h"
 #include "ui/base/resource/resource_bundle.h"
 
 ChromeWebUIDataSource::ChromeWebUIDataSource(const std::string& source_name)
     : DataSource(source_name, MessageLoop::current()) {
 }
 
 ChromeWebUIDataSource::~ChromeWebUIDataSource() {
 }
 
+void ChromeWebUIDataSource::AddString(const std::string& name,
+                                      const string16& value) {
+  localized_strings_.SetString(name, value);
+}
+
 void ChromeWebUIDataSource::AddLocalizedString(const std::string& name,
                                                int ids) {
   localized_strings_.SetString(name, l10n_util::GetStringUTF16(ids));
 }
 
 void ChromeWebUIDataSource::SendLocalizedStringsAsJSON(int request_id) {
   std::string template_data;
   scoped_refptr<RefCountedBytes> response(new RefCountedBytes);
   SetFontAndTextDirection(&localized_strings_);
   jstemplate_builder::AppendJsonJS(&localized_strings_, &template_data);
   response->data.resize(template_data.size());
   std::copy(template_data.begin(), template_data.end(),response->data.begin());
   SendResponse(request_id, response);
 }
 
 void ChromeWebUIDataSource::SendFromResourceBundle(int request_id, int idr) {
   scoped_refptr<RefCountedStaticMemory> response(
       ResourceBundle::GetSharedInstance().LoadDataResourceBytes(idr));
   SendResponse(request_id, response);
 }