Moves ash/wm/common back into ash

ash/wm/common/root_window_finder.h

Index: ash/wm/common/root_window_finder.h
diff --git a/ash/wm/common/root_window_finder.h b/ash/wm/common/root_window_finder.h
index a8dbef0939b08a2394c1998f5101ef8bbc88e525..f35459a6c44671456fc41838291f08351bd47a7a 100644
--- a/ash/wm/common/root_window_finder.h
+++ b/ash/wm/common/root_window_finder.h
@@ -5,7 +5,7 @@
 #ifndef ASH_WM_COMMON_ROOT_WINDOW_FINDER_H_
 #define ASH_WM_COMMON_ROOT_WINDOW_FINDER_H_
 
-#include "ash/wm/common/ash_wm_common_export.h"
+#include "ash/ash_export.h"
 
 namespace gfx {
 class Point;
@@ -20,11 +20,11 @@ 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_WM_COMMON_EXPORT WmWindow* 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_WM_COMMON_EXPORT WmWindow* GetRootWindowMatching(const gfx::Rect& rect);
+ASH_EXPORT WmWindow* GetRootWindowMatching(const gfx::Rect& rect);
 
 }  // namespace wm
 }  // namespace ash