MacViews: Implement basic NSEvent -> ui::Event conversion for Mac

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 9c40ab5fa943386e9b5d550f59b3a2fc1628a052..3921c4c9b5129c4769f6279f8dbad0aa86a8fdc5 100644
--- a/ui/events/event_utils.h
+++ b/ui/events/event_utils.h
@@ -84,6 +84,15 @@ EVENTS_EXPORT int GetChangedMouseButtonFlagsFromNative(
 EVENTS_EXPORT gfx::Vector2d GetMouseWheelOffset(
     const base::NativeEvent& native_event);
 
+// Returns a copy of |native_event|. Depending on the platform, this copy may
+// need to be deleted with ReleaseCopiedNativeEvent().
+EVENTS_EXPORT base::NativeEvent CopyNativeEvent(
+    const base::NativeEvent& native_event);
+
+// Delete a |native_event| previously created by CopyNativeEvent().
+EVENTS_EXPORT void ReleaseCopiedNativeEvent(

[sadrul, 2014/04/24 19:47:12]

You probably don't need to export these two functions.

[tapted, 2014/04/25 03:44:55]

Done. I realised that too :) but went for export for consistency. Let me know if
you want these somewhere else instead..

+    const base::NativeEvent& native_event);
+
 // Gets the touch id from a native event.
 EVENTS_EXPORT int GetTouchId(const base::NativeEvent& native_event);