Specify AllowCaching = false for some ChromeOS UI pages

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

Index: chrome/browser/ui/webui/chromeos/mobile_setup_ui.cc
diff --git a/chrome/browser/ui/webui/chromeos/mobile_setup_ui.cc b/chrome/browser/ui/webui/chromeos/mobile_setup_ui.cc
index 1bff6a9351b59ca5ce9661c8a559176f5e97363d..d5942b5658b016da582a0062683822a8c78ac061 100644
--- a/chrome/browser/ui/webui/chromeos/mobile_setup_ui.cc
+++ b/chrome/browser/ui/webui/chromeos/mobile_setup_ui.cc
@@ -628,6 +628,11 @@ MobileSetupUI::MobileSetupUI(content::WebUI* web_ui)
   content::WebContentsObserver::Observe(web_ui->GetWebContents());
 }
 
+bool MobileSetupUI::AllowCaching() const {
+  // Should not be cached to reflect dynamically-generated contents.
+  return false;
+}
+
 void MobileSetupUI::DidFinishNavigation(
     content::NavigationHandle* navigation_handle) {
   if (!navigation_handle->HasCommitted() ||