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

Source/core/workers/WorkerGlobalScope.cpp

Index: Source/core/workers/WorkerGlobalScope.cpp
diff --git a/Source/core/workers/WorkerGlobalScope.cpp b/Source/core/workers/WorkerGlobalScope.cpp
index 2321ebf94dbbea6604e0d30d10c17966b55123a3..aa23e9aee1f26e1ba352c64fd98643ef19f23413 100644
--- a/Source/core/workers/WorkerGlobalScope.cpp
+++ b/Source/core/workers/WorkerGlobalScope.cpp
@@ -181,12 +181,12 @@ void WorkerGlobalScope::postTask(PassOwnPtr<Task> task)
 
 int WorkerGlobalScope::setTimeout(PassOwnPtr<ScheduledAction> action, int timeout)
 {
-    return DOMTimer::install(scriptExecutionContext(), action, timeout, true);
+    return DOMTimer::install(scriptExecutionContext(), DOMTimer::TimerTypeTimeout, action, timeout);
 }
 
 void WorkerGlobalScope::clearTimeout(int timeoutID)
 {
-    DOMTimer::removeByID(scriptExecutionContext(), timeoutID);
+    DOMTimer::removeByIDIfTypeMatches(scriptExecutionContext(), DOMTimer::TimerTypeTimeout, timeoutID);
 }
 
 void WorkerGlobalScope::clearInspector()
@@ -196,12 +196,12 @@ void WorkerGlobalScope::clearInspector()
 
 int WorkerGlobalScope::setInterval(PassOwnPtr<ScheduledAction> action, int timeout)
 {
-    return DOMTimer::install(scriptExecutionContext(), action, timeout, false);
+    return DOMTimer::install(scriptExecutionContext(), DOMTimer::TimerTypeInterval, action, timeout);
 }
 
 void WorkerGlobalScope::clearInterval(int timeoutID)
 {
-    DOMTimer::removeByID(scriptExecutionContext(), timeoutID);
+    DOMTimer::removeByIDIfTypeMatches(scriptExecutionContext(), DOMTimer::TimerTypeInterval, timeoutID);
 }
 
 void WorkerGlobalScope::importScripts(const Vector<String>& urls, ExceptionCode& ec)