events: Inlcude the event-phase and event-result in Event.

ui/base/events/event_constants.h

Index: ui/base/events/event_constants.h
diff --git a/ui/base/events/event_constants.h b/ui/base/events/event_constants.h
index 91d0be5ce99c371058aa330dbd511733699a75d2..4242ea8106aa876837f01852f35a7b8824f69fa7 100644
--- a/ui/base/events/event_constants.h
+++ b/ui/base/events/event_constants.h
@@ -105,6 +105,15 @@ enum EventResult {
                      // propagated to other handlers.
 };
 
+// Phase of the event dispatch.
+enum EventPhase {
+  EP_NONE,
+  EP_PRETARGET,
+  EP_TARGET,
+  EP_POSTTARGET,
+  EP_COMPLETE

[Ben Goodger (Google), 2012/09/10 18:07:14]

i'd tend to reset to EP_NONE after dispatch.

if you believe there's a benefit to knowing pre- and post- dispatch, then i'd
change this and EP_NONE to

EP_PREDISPATCH & EP_POSTDISPATCH
or
EP_UNDISPATCHED & EP_DISPATCHED

[sadrul, 2012/09/10 18:35:24]

I renamed NONE,COMPLETE to PREDISPATCH/POSTDISPATCH (I don't have a use-case in
mind for separating the two at the moment, but I feel like this might be useful
at some point, and it would probably be easier to merge the two values later if
they are unneeded than to separate them at a later time should the need arise).

+};
+
 enum TouchStatus {
   TOUCH_STATUS_UNKNOWN = 0,  // Unknown touch status. This is used to indicate
                              // that the touch event was not handled.