Make EventHandler::ActiveIntervalTimer mockable.

Source/core/testing/Internals.cpp

Index: Source/core/testing/Internals.cpp
diff --git a/Source/core/testing/Internals.cpp b/Source/core/testing/Internals.cpp
index 09f35e51cbcb35b1e3568753d9fae31b5a0fa531..fd2081edeb32c77aba67a61f4d17a8605263b5df 100644
--- a/Source/core/testing/Internals.cpp
+++ b/Source/core/testing/Internals.cpp
@@ -1263,6 +1263,21 @@ PassRefPtr<ClientRect> Internals::bestZoomableAreaForTouchPoint(long x, long y,
     return 0;
 }
 
+void Internals::setActiveIntervalTimerInManualMode(Document* document, bool manualMode, ExceptionState& exceptionState)
+{
+    if (!document || !document->frame())
+        exceptionState.throwUninformativeAndGenericDOMException(InvalidAccessError);
+
+    document->frame()->eventHandler().activeIntervalTimerForTesting()->setManualModeForTesting(manualMode);
+}
+
+void Internals::fireActiveIntervalTimer(Document* document, ExceptionState& exceptionState)
+{
+    if (!document || !document->frame())
+        exceptionState.throwUninformativeAndGenericDOMException(InvalidAccessError);
+
+    document->frame()->eventHandler().activeIntervalTimerForTesting()->manualFireForTesting();
+}
 
 int Internals::lastSpellCheckRequestSequence(Document* document, ExceptionState& exceptionState)
 {