Specify AllowCaching = false for some ChromeOS UI pages

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

Index: chrome/browser/ui/webui/chromeos/slow_trace_ui.cc
diff --git a/chrome/browser/ui/webui/chromeos/slow_trace_ui.cc b/chrome/browser/ui/webui/chromeos/slow_trace_ui.cc
index 496601f3e7f35452745f3e6a3aa6f82ad04c5958..7faf7cd9f865834631bebff301ce54412db53aa6 100644
--- a/chrome/browser/ui/webui/chromeos/slow_trace_ui.cc
+++ b/chrome/browser/ui/webui/chromeos/slow_trace_ui.cc
@@ -62,6 +62,12 @@ void SlowTraceSource::OnGetTraceData(
   callback.Run(trace_data.get());
 }
 
+bool SlowTraceSource::AllowCaching() const {
+  // Should not be cached to reflect dynamically-generated contents that may
+  // depend on current settings.
+  return false;
+}
+
 ////////////////////////////////////////////////////////////////////////////////
 //
 // SlowTraceController