Removes most aura dependencies from WindowResizer

ash/wm/common/root_window_finder.h

Index: ash/wm/common/root_window_finder.h
diff --git a/ash/wm/coordinate_conversion.h b/ash/wm/common/root_window_finder.h
similarity index 65%
rename from ash/wm/coordinate_conversion.h
rename to ash/wm/common/root_window_finder.h
index aa4a84850b1907244a3699bf92d5691335a3440a..f35459a6c44671456fc41838291f08351bd47a7a 100644
--- a/ash/wm/coordinate_conversion.h
+++ b/ash/wm/common/root_window_finder.h
@@ -2,15 +2,11 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef ASH_WM_COORDINATE_CONVERSION_H_
-#define ASH_WM_COORDINATE_CONVERSION_H_
+#ifndef ASH_WM_COMMON_ROOT_WINDOW_FINDER_H_
+#define ASH_WM_COMMON_ROOT_WINDOW_FINDER_H_
 
 #include "ash/ash_export.h"
 
-namespace aura {
-class Window;
-}  // namespace gfx
-
 namespace gfx {
 class Point;
 class Rect;
@@ -19,16 +15,18 @@ class Rect;
 namespace ash {
 namespace wm {
 
+class WmWindow;
+
 // Returns the RootWindow at |point| in the virtual screen coordinates.
 // Returns NULL if the root window does not exist at the given
 // point.
-ASH_EXPORT aura::Window* GetRootWindowAt(const gfx::Point& point);
+ASH_EXPORT WmWindow* GetRootWindowAt(const gfx::Point& point);
 
 // Returns the RootWindow that shares the most area with |rect| in
 // the virtual scren coordinates.
-ASH_EXPORT aura::Window* GetRootWindowMatching(const gfx::Rect& rect);
+ASH_EXPORT WmWindow* GetRootWindowMatching(const gfx::Rect& rect);
 
 }  // namespace wm
 }  // namespace ash
 
-#endif  // ASH_WM_COORDINATE_CONVERSION_H_
+#endif  // ASH_WM_COMMON_ROOT_WINDOW_FINDER_H_