Specify AllowCaching = false for some ChromeOS UI pages

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

Index: chrome/browser/ui/webui/chromeos/sim_unlock_ui.cc
diff --git a/chrome/browser/ui/webui/chromeos/sim_unlock_ui.cc b/chrome/browser/ui/webui/chromeos/sim_unlock_ui.cc
index b6635c092b443ad93a92899070d2187d5adc57fe..7826d8e46e984e60d5c65ecb60ec557c433af68c 100644
--- a/chrome/browser/ui/webui/chromeos/sim_unlock_ui.cc
+++ b/chrome/browser/ui/webui/chromeos/sim_unlock_ui.cc
@@ -94,6 +94,11 @@ class SimUnlockUIHTMLSource : public content::URLDataSource {
     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 {}