mus: Change PointerWatcher to observe all pointer events, with moves optional.

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..105b349f14391267c68de303ac04672791a401f2 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 PointerEvent;
 }
 
 namespace views {
@@ -29,12 +28,13 @@ 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;
+
+  // Called with mouse and touch events. To reduce IPC traffic from the window
+  // server, move events are not provided unless the app specifically requests
+  // them.
+  virtual void OnPointerWatcherEvent(const ui::PointerEvent& event,

[James Cook, 2016/07/27 01:54:02]

Thanks for renaming this!

[riajiang, 2016/07/27 22:39:16]

You are welcome!

+                                     const gfx::Point& location_in_screen,
+                                     Widget* target) = 0;
 
  protected:
   virtual ~PointerWatcher() {}