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 7adaee26e2c4440694fcf566189701fdefac53da..57e4ac85cf505ec8ee2d899c92208ea6e8086321 100644
--- a/Source/core/testing/Internals.cpp
+++ b/Source/core/testing/Internals.cpp
@@ -1234,6 +1234,29 @@ PassRefPtr<ClientRect> Internals::bestZoomableAreaForTouchPoint(long x, long y,
     return 0;
 }
 
+void Internals::suspendActiveIntervalTimer(Document* document, ExceptionState& exceptionState)
+{
+    if (!document || !document->frame())
+        exceptionState.throwUninformativeAndGenericDOMException(InvalidAccessError);
+
+    document->frame()->eventHandler().getActiveIntervalTimerForTesting()->enterManualModeForTesting();
+}
+
+void Internals::resumeActiveIntervalTimer(Document* document, ExceptionState& exceptionState)
+{
+    if (!document || !document->frame())
+        exceptionState.throwUninformativeAndGenericDOMException(InvalidAccessError);
+
+    document->frame()->eventHandler().getActiveIntervalTimerForTesting()->leaveManualModeForTesting();
+}
+
+void Internals::fireActiveIntervalTimer(Document* document, ExceptionState& exceptionState)
+{
+    if (!document || !document->frame())
+        exceptionState.throwUninformativeAndGenericDOMException(InvalidAccessError);
+
+    document->frame()->eventHandler().getActiveIntervalTimerForTesting()->manualFireForTesting();
+}
 
 int Internals::lastSpellCheckRequestSequence(Document* document, ExceptionState& exceptionState)
 {