Bug 1578355 - Part 1: Move user-activation code from EventStateManager to UserActivation; r=smaug

Differential Revision: https://phabricator.services.mozilla.com/D45168

dom/xhr/XMLHttpRequestMainThread.cpp

@@ -24,13 +24,13 @@
 #include "mozilla/dom/MutableBlobStorage.h"
 #include "mozilla/dom/XMLDocument.h"
 #include "mozilla/dom/URLSearchParams.h"
+#include "mozilla/dom/UserActivation.h"
 #include "mozilla/dom/Promise.h"
 #include "mozilla/dom/PromiseNativeHandler.h"
 #include "mozilla/dom/WorkerError.h"
 #include "mozilla/Encoding.h"
 #include "mozilla/EventDispatcher.h"
 #include "mozilla/EventListenerManager.h"
-#include "mozilla/EventStateManager.h"
 #include "mozilla/LoadInfo.h"
 #include "mozilla/LoadContext.h"
 #include "mozilla/MemoryReporting.h"
@@ -2559,7 +2559,7 @@ nsresult XMLHttpRequestMainThread::InitiateFetch(
 
     // Mark channel as urgent-start if the XHR is triggered by user input
     // events.
-    if (EventStateManager::IsHandlingUserInput()) {
+    if (UserActivation::IsHandlingUserInput()) {
       cos->AddClassFlags(nsIClassOfService::UrgentStart);
     }
   }