mus: Change PointerWatcher to watch for all events.

ui/views/pointer_watcher.h

Index: ui/views/pointer_watcher.h
diff --git a/ui/views/pointer_watcher.h b/ui/views/pointer_watcher.h
index 5ca10efb4b081548a46c51a77c415cdaf7cf7883..0d28a84df1d282bf8c22ccaa10aad535bd12bb20 100644
--- a/ui/views/pointer_watcher.h
+++ b/ui/views/pointer_watcher.h
@@ -13,8 +13,7 @@ class Point;
 }
 
 namespace ui {
-class MouseEvent;
-class TouchEvent;
+class LocatedEvent;
 }
 
 namespace views {
@@ -29,12 +28,9 @@ class Widget;
 class VIEWS_EXPORT PointerWatcher {
  public:
   PointerWatcher() {}
-  virtual void OnMousePressed(const ui::MouseEvent& event,
-                              const gfx::Point& location_in_screen,
-                              Widget* target) = 0;
-  virtual void OnTouchPressed(const ui::TouchEvent& event,
-                              const gfx::Point& location_in_screen,
-                              Widget* target) = 0;
+  virtual void OnPointerEventObserved(const ui::LocatedEvent& event,
+                                      const gfx::Point& location_in_screen,
+                                      Widget* target) = 0;
 
  protected:
   virtual ~PointerWatcher() {}