Allow the cursor to warp even when a window is dragged

ash/wm/default_window_resizer.h

Index: ash/wm/default_window_resizer.h
diff --git a/ash/wm/default_window_resizer.h b/ash/wm/default_window_resizer.h
index ad8e2dfb48ec60a2ae2395c9f3195679dbe7c1b7..be9d1b1a547dbb98870cd150ddcb9b06f6a31483 100644
--- a/ash/wm/default_window_resizer.h
+++ b/ash/wm/default_window_resizer.h
@@ -32,7 +32,8 @@ class ASH_EXPORT DefaultWindowResizer : public WindowResizer {
   aura::Window* target_window() const { return details_.window; }
 
   // WindowResizer overides:
-  virtual void Drag(const gfx::Point& location, int event_flags) OVERRIDE;
+  virtual void Drag(const gfx::Point& location_in_screen,

[sky, 2012/08/02 23:28:31]

Making this a screen coordinate is too error prone. Keep it in terms of the
parent like it is now and convert as necessary.

I think it's worth adding a GetRootWindowRelativeToWindow that does the
conversion. Don't put it in Shell though. We should move these sort of
coordinate conversions into a namespace in their own file. GetRootWindowAt and
GetRootWindowMatching should be moved there too. Maybe coordinate_conversions or
something.

[Yusuke Sato, 2012/08/03 01:52:11]

Done.

+                    int event_flags) OVERRIDE;
   virtual void CompleteDrag(int event_flags) OVERRIDE;
   virtual void RevertDrag() OVERRIDE;