Change mojo enums to be scoped enums in the generated C++ bindings.

components/mus/public/interfaces/input_events.mojom

Index: components/mus/public/interfaces/input_events.mojom
diff --git a/components/mus/public/interfaces/input_events.mojom b/components/mus/public/interfaces/input_events.mojom
index 3647b665268d289f61775aff43a35d7d8b8d5728..d4ce5d35945b28e6567dfcc57166849efd07b097 100644
--- a/components/mus/public/interfaces/input_events.mojom
+++ b/components/mus/public/interfaces/input_events.mojom
@@ -105,7 +105,7 @@ struct Event {
   // TODO(sky): rename to type.
   EventType action;
   // TODO(sky): parts of this should move to PointerData.
-  EventFlags flags;
+  int32 flags;

[yzshen1, 2016/01/07 19:24:52]

Please add comments.

[Sam McNally, 2016/01/08 05:12:51]

Done.

   // Time in microseconds from when the platform was started.
   // This value accurately orders events w.r.t. to each other but
   // does not position them at an absolute time.