Reorganize event mojom files.

components/mus/public/interfaces/window_manager.mojom

Index: components/mus/public/interfaces/window_manager.mojom
diff --git a/components/mus/public/interfaces/window_manager.mojom b/components/mus/public/interfaces/window_manager.mojom
index f9836e315f82ca2406866eb5901cec8d75eb9849..0b31c9541854cd37323469e87da9abd11a674488 100644
--- a/components/mus/public/interfaces/window_manager.mojom
+++ b/components/mus/public/interfaces/window_manager.mojom
@@ -6,8 +6,8 @@ module mus.mojom;
 
 import "components/mus/public/interfaces/cursor.mojom";
 import "components/mus/public/interfaces/event_matcher.mojom";
-import "components/mus/public/interfaces/input_events.mojom";
 import "components/mus/public/interfaces/window_manager_constants.mojom";
+import "ui/events/mojo/event.mojom";
 import "ui/gfx/geometry/mojo/geometry.mojom";
 
 // WindowManager is used when a WindowTreeClient attempts to modify
@@ -73,7 +73,7 @@ interface WindowManager {
   WmClientJankinessChanged(uint16 client_id, bool janky);
 
   // An accelerator registered via AddAccelerator() has been triggered.
-  OnAccelerator(uint32 id, Event event);
+  OnAccelerator(uint32 id, ui.mojom.Event event);
 };
 
 // This interface is only used as an associated interface and is associated