Distinguish actions registered with setTimeout() and setInterval().

Source/core/page/DOMWindow.cpp

Index: Source/core/page/DOMWindow.cpp
diff --git a/Source/core/page/DOMWindow.cpp b/Source/core/page/DOMWindow.cpp
index 91af94846ad7a7891bc4672663ff139adfca6788..3a5121c1bdd8ac737a6460e5c0fe54d8c3be4991 100644
--- a/Source/core/page/DOMWindow.cpp
+++ b/Source/core/page/DOMWindow.cpp
@@ -1400,13 +1400,13 @@ void DOMWindow::resizeTo(float width, float height) const
 void DOMWindow::clearTimeout(int timeoutID)
 {
     if (ScriptExecutionContext* context = scriptExecutionContext())
-        DOMTimer::removeByID(context, timeoutID);
+        DOMTimer::removeByIDIfTypeMatches(context, DOMTimer::TimerTypeTimeout, timeoutID);
 }
 
 void DOMWindow::clearInterval(int timeoutID)
 {
     if (ScriptExecutionContext* context = scriptExecutionContext())
-        DOMTimer::removeByID(context, timeoutID);
+        DOMTimer::removeByIDIfTypeMatches(context, DOMTimer::TimerTypeInterval, timeoutID);
 }
 
 static LayoutSize size(HTMLImageElement* image)