Makes WorkspaceWindowResizer use ash/wm/common types

ash/wm/window_resizer.h

Index: ash/wm/window_resizer.h
diff --git a/ash/wm/window_resizer.h b/ash/wm/window_resizer.h
index 39a47a8b40a3f0a2ed5740bcab7490a2c33f06ca..5466f1346be4cf9d8a5c70acf30b76635bbd087e 100644
--- a/ash/wm/window_resizer.h
+++ b/ash/wm/window_resizer.h
@@ -110,9 +110,8 @@ class ASH_EXPORT WindowResizer {
 
 // Creates a WindowResizer for |window|. This can return a scoped_ptr

[James Cook, 2016/04/22 20:06:13]

nit while you're here: scoped_ptr -> unique_ptr

[sky, 2016/04/22 20:13:20]

Done.

 // initialized with NULL if |window| should not be resized nor dragged.
-// TODO(sky): move this to its own file. This is aura specific.
 ASH_EXPORT std::unique_ptr<WindowResizer> CreateWindowResizer(
-    aura::Window* window,
+    wm::WmWindow* window,
     const gfx::Point& point_in_parent,
     int window_component,
     aura::client::WindowMoveSource source);