Specify AllowCaching = false for some ChromeOS UI pages

chrome/browser/ui/webui/chromeos/certificate_manager_dialog_ui.cc

 // Copyright 2014 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/chromeos/certificate_manager_dialog_ui.h"
 
 #include <memory>
 
 #include "base/macros.h"
 #include "base/memory/ptr_util.h"
@@ skipping 111 matching lines @@
   content::URLDataSource::Add(profile, source);
 }
 
 CertificateManagerDialogUI::~CertificateManagerDialogUI() {
   // Uninitialize all registered handlers. The base class owns them and it will
   // eventually delete them.
   core_handler_->Uninitialize();
   cert_handler_->Uninitialize();
 }
 
+bool CertificateManagerDialogUI::AllowCaching() {
+  // Should not be cached to reflect dynamically-generated contents.
+  return false;
+}
+
 void CertificateManagerDialogUI::InitializeHandlers() {
   // A new web page DOM has been brought up in an existing renderer, causing
   // this method to be called twice. In that case, don't initialize the handlers
   // again. Compare with options_ui.cc.
   if (!initialized_handlers_) {
     core_handler_->InitializeHandler();
     cert_handler_->InitializeHandler();
     initialized_handlers_ = true;
   }
   core_handler_->InitializePage();
   cert_handler_->InitializePage();
 }
 
 }  // namespace chromeos