Specify AllowCaching = false for some ChromeOS UI pages

chrome/browser/ui/webui/chromeos/sim_unlock_ui.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/ui/webui/chromeos/sim_unlock_ui.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <string>
@@ skipping 76 matching lines @@
   // content::URLDataSource implementation.
   std::string GetSource() const override;
   void StartDataRequest(
       const std::string& path,
       const content::ResourceRequestInfo::WebContentsGetter& wc_getter,
       const content::URLDataSource::GotDataCallback& callback) override;
   std::string GetMimeType(const std::string&) const override {
     return "text/html";
   }
   bool ShouldAddContentSecurityPolicy() const override { return false; }
+  bool AllowCaching() const override {
+    // Should not be cached to reflect dynamically-generated contents that may
+    // depend on current settings.
+    return false;
+  }
 
  private:
   ~SimUnlockUIHTMLSource() override {}
 
   std::string service_path_;
   DISALLOW_COPY_AND_ASSIGN(SimUnlockUIHTMLSource);
 };
 
 // The handler for Javascript messages related to the "sim-unlock" view.
 class SimUnlockHandler : public WebUIMessageHandler,
@@ skipping 655 matching lines @@
 SimUnlockUI::SimUnlockUI(content::WebUI* web_ui) : WebUIController(web_ui) {
   web_ui->AddMessageHandler(base::MakeUnique<SimUnlockHandler>());
   SimUnlockUIHTMLSource* html_source = new SimUnlockUIHTMLSource();
 
   // Set up the chrome://sim-unlock/ source.
   Profile* profile = Profile::FromWebUI(web_ui);
   content::URLDataSource::Add(profile, html_source);
 }
 
 }  // namespace chromeos