Drop [LegacyImplementedInBaseClass] attribute from WindowTimers

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 6cde87e54c40971be7046abc00623c7a1cda25d4..c028cedb1bfaaeb40f356cd77a2f01473594fd72 100644
--- a/Source/core/page/DOMWindow.cpp
+++ b/Source/core/page/DOMWindow.cpp
@@ -74,7 +74,6 @@
 #include "core/page/Console.h"
 #include "core/page/CreateWindow.h"
 #include "core/page/DOMPoint.h"
-#include "core/page/DOMTimer.h"
 #include "core/page/EventHandler.h"
 #include "core/page/Frame.h"
 #include "core/page/FrameTree.h"
@@ -1361,18 +1360,6 @@ void DOMWindow::resizeTo(float width, float height) const
     page->chrome().setWindowRect(adjustWindowRect(page, update));
 }
 
-void DOMWindow::clearTimeout(int timeoutID)
-{
-    if (ScriptExecutionContext* context = scriptExecutionContext())
-        DOMTimer::removeByID(context, timeoutID);
-}
-
-void DOMWindow::clearInterval(int timeoutID)
-{
-    if (ScriptExecutionContext* context = scriptExecutionContext())
-        DOMTimer::removeByID(context, timeoutID);
-}
-
 static LayoutSize size(HTMLImageElement* image)
 {
     if (CachedImage* cachedImage = image->cachedImage())