Reland "Propagate information about how ARC apps are launched"

ui/events/event_utils.h

Index: ui/events/event_utils.h
diff --git a/ui/events/event_utils.h b/ui/events/event_utils.h
index c7a51aab0abb3ffe0dd50e08512f524e41dbac28..35a9b73194175c8421b3787a38bf6c79c8e5b3ae 100644
--- a/ui/events/event_utils.h
+++ b/ui/events/event_utils.h
@@ -181,6 +181,12 @@ EVENTS_EXPORT void UpdateX11EventForChangedButtonFlags(MouseEvent* event);
 // Registers a custom event type.
 EVENTS_EXPORT int RegisterCustomEventType();
 
+// Returns true if |event_flags| indicate the event came from a mouse event.
+EVENTS_EXPORT bool IsMouseEventFromFlags(int event_flags);
+
+// Returns true if |event_flags| indicate the event came from a touch event.
+EVENTS_EXPORT bool IsTouchEventFromFlags(int event_flags);
+
 }  // namespace ui
 
 #endif  // UI_EVENTS_EVENT_UTILS_H_