Extract a DOMWindow interface from LocalDOMWindow and use it in the idl.

Source/core/events/TouchEvent.cpp

Index: Source/core/events/TouchEvent.cpp
diff --git a/Source/core/events/TouchEvent.cpp b/Source/core/events/TouchEvent.cpp
index f05a6819042abb805b59fb967054efc7b5e313eb..c5308607efb407fab7d55ccca12b4fd2d870e330 100644
--- a/Source/core/events/TouchEvent.cpp
+++ b/Source/core/events/TouchEvent.cpp
@@ -96,8 +96,8 @@ void TouchEvent::preventDefault()
     // A common developer error is to wait too long before attempting to stop
     // scrolling by consuming a touchmove event. Generate a warning if this
     // event is uncancelable.
-    if (!cancelable() && view() && view()->frame()) {
-        view()->frame()->console().addMessage(ConsoleMessage::create(JSMessageSource, WarningMessageLevel,
+    if (!cancelable() && view() && view()->frame() && view()->frame()->isLocalFrame()) {

[haraken, 2014/11/08 09:17:25]

Nit: Can we check view()->isLocalWindow() instead of
view()->frame()->isLocalFrame() just for consistency?

[dcheng, 2014/11/08 23:59:56]

Done.

+        toLocalFrame(view()->frame())->console().addMessage(ConsoleMessage::create(JSMessageSource, WarningMessageLevel,
             "Ignored attempt to cancel a " + type() + " event with cancelable=false, for example because scrolling is in progress and cannot be interrupted."));
     }
 }