Makes WorkspaceLayoutManager use ash/wm/common types

ash/wm/common/switchable_windows.h

Index: ash/wm/common/switchable_windows.h
diff --git a/ash/switchable_windows.h b/ash/wm/common/switchable_windows.h
similarity index 71%
rename from ash/switchable_windows.h
rename to ash/wm/common/switchable_windows.h
index b7c4c21b088230a4b9aeaa581b30e7fbb3d50a87..f3c687ccfe78cbcf57cc9e5eca54b2d42b312ee7 100644
--- a/ash/switchable_windows.h
+++ b/ash/wm/common/switchable_windows.h
@@ -2,19 +2,18 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef ASH_SWITCHABLE_WINDOWS_H_
-#define ASH_SWITCHABLE_WINDOWS_H_
+#ifndef ASH_WM_COMMON_SWITCHABLE_WINDOWS_H_
+#define ASH_WM_COMMON_SWITCHABLE_WINDOWS_H_
 
 #include <stddef.h>
 
 #include "ash/ash_export.h"
 #include "base/macros.h"
 
-namespace aura {
-  class Window;
-}
-
 namespace ash {
+namespace wm {
+
+class WmWindow;
 
 // List of containers which contain windows that can be switched via Alt+Tab to.
 ASH_EXPORT extern const int kSwitchableWindowContainerIds[];
@@ -23,8 +22,9 @@ ASH_EXPORT extern const int kSwitchableWindowContainerIds[];
 ASH_EXPORT extern const size_t kSwitchableWindowContainerIdsLength;
 
 // Returns true if |window| is a container for windows which can be switched to.
-ASH_EXPORT bool IsSwitchableContainer(const aura::Window* window);
+ASH_EXPORT bool IsSwitchableContainer(const WmWindow* window);
 
+}  // namespace wm
 }  // namespace ash
 
-#endif  // ASH_SWITCHABLE_WINDOWS_H_
+#endif  // ASH_WM_COMMON_SWITCHABLE_WINDOWS_H_