Shuffles and renames ash/common/wm classes

ash/common/wm/root_window_finder.h

Index: ash/common/wm/root_window_finder.h
diff --git a/ash/common/wm/root_window_finder.h b/ash/common/wm/root_window_finder.h
index 00750b149053078adbbd37309791308e618e7684..bfda8c9bc388561e4a3795b33d436aaeb57f1844 100644
--- a/ash/common/wm/root_window_finder.h
+++ b/ash/common/wm/root_window_finder.h
@@ -13,10 +13,11 @@ class Rect;
 }  // namespace gfx
 
 namespace ash {
-namespace wm {
 
 class WmWindow;
 
+namespace wm {
+
 // Returns the RootWindow at |point| in the virtual screen coordinates.
 // Returns NULL if the root window does not exist at the given
 // point.