Primary display change notifications.

services/ui/ws/display.h

Index: services/ui/ws/display.h
diff --git a/services/ui/ws/display.h b/services/ui/ws/display.h
index ca99bfb68ca7051fa8e67ef13923709026bdc8ba..d3fb86114f1eec31675a07485a559a1145fd5a05 100644
--- a/services/ui/ws/display.h
+++ b/services/ui/ws/display.h
@@ -72,11 +72,7 @@ class Display : public PlatformDisplayDelegate,
 
   PlatformDisplay* platform_display() { return platform_display_.get(); }
 
-  // Returns a mojom::WsDisplay for the specified display. WindowManager
-  // specific values are not set.
-  mojom::WsDisplayPtr ToWsDisplay() const;
-
-  // Returns a display::Display for the specficied display.
+  // Returns a display::Display corresponding to this ws::Display.
   display::Display ToDisplay() const;
 
   // Schedules a paint for the specified region in the coordinates of |window|.