Move WindowResizer to CoreWM.

ash/wm/gestures/two_finger_drag_handler.h

Index: ash/wm/gestures/two_finger_drag_handler.h
===================================================================
--- ash/wm/gestures/two_finger_drag_handler.h	(revision 173169)
+++ ash/wm/gestures/two_finger_drag_handler.h	(working copy)
@@ -17,10 +17,14 @@
 class GestureEvent;
 }
 
+namespace views {
+namespace corewm {
+class WindowResizer;
+}
+}
+
 namespace ash {
 
-class WindowResizer;
-
 namespace internal {
 
 // This handles 2-finger drag gestures to move toplevel windows.
@@ -44,7 +48,7 @@
 
   int first_finger_hittest_;
 
-  scoped_ptr<WindowResizer> window_resizer_;
+  scoped_ptr<views::corewm::WindowResizer> window_resizer_;
 
   DISALLOW_COPY_AND_ASSIGN(TwoFingerDragHandler);
 };