wayland: define base:NativeEvent for Wayland

base/event_types.h

Index: base/event_types.h
diff --git a/base/event_types.h b/base/event_types.h
index 092ec7f33faf969cc8e03a22646d69cebf6b488d..f4234de119f2fb1b5cd0bcffa83d34b5c1d77fd2 100644
--- a/base/event_types.h
+++ b/base/event_types.h
@@ -10,9 +10,11 @@
 
 #if defined(OS_WIN)
 #include <windows.h>
-#endif
-
-#if defined(USE_X11)
+#elif defined(USE_WAYLAND)
+namespace ui {
+union WaylandEvent;
+}
+#elif defined(USE_X11)

[oshima, 2011/11/04 01:18:31]

base cannot depend on ui, or has notion of ui. (even if you somehow convince me,
you probably won't get LGTM from OWNERS, although I'll be happy to be proven
wrong)
I think your idea about using third party may have more chance.

[Elliot Glaysher, 2011/11/04 01:20:23]

+1. base/ is included by everything.

 typedef union _XEvent XEvent;
 #endif
 
@@ -21,13 +23,10 @@ namespace base {
 // Cross platform typedefs for native event types.
 #if defined(OS_WIN)
 typedef MSG NativeEvent;
+#elif defined(USE_WAYLAND)
+typedef ui::WaylandEvent* NativeEvent;
 #elif defined(USE_X11)
 typedef XEvent* NativeEvent;
-#elif defined(USE_WAYLAND)
-// WaylandEvent is currently defined in ui component and cannot be
-// used in base component. Probably wayland maintainer has to move it
-// outside of ui in order to define NativeEvent for wayland here.
-typedef void* NativeEvent;
 #else
 typedef void* NativeEvent;
 #endif