Make touch events uncancelable during fling when they are on the current active scroll layer

cc/input/event_listener_properties.h

Index: cc/input/event_listener_properties.h
diff --git a/cc/input/event_listener_properties.h b/cc/input/event_listener_properties.h
index e1932afe2a9d49725a97b829fe447f31ac653f10..70299777378b7879615cdcfc0481aa10896219c8 100644
--- a/cc/input/event_listener_properties.h
+++ b/cc/input/event_listener_properties.h
@@ -22,6 +22,7 @@ enum class EventListenerProperties {
   kPassive,
   kBlocking,
   kBlockingAndPassive,

[dtapuska, 2016/11/21 19:19:30]

I have a problem with this enum not matching the blink enum now.

https://cs.chromium.org/chromium/src/content/renderer/gpu/render_widget_compo...

The new method doesn't ever return kPassive. 

I wonder if we really should just return a special enum for this method that you
added; it could have very similar constants to this. But using the enum is
dangerous as it is statically cast and checked between blink and CC. (although
it appears to be missing a static size check for kMax which would have caught
this discrepency).

[lanwei, 2016/11/23 21:57:38]

Done.

+  kBlockingAndMaybePassiveDueToFling,
   kMax
 };