Makes WorkspaceLayoutManager use ash/wm/common types

ash/wm/common/wm_globals.h

Index: ash/wm/common/wm_globals.h
diff --git a/ash/wm/common/wm_globals.h b/ash/wm/common/wm_globals.h
index 3b4a558e5e6e5a3002c354ed6abb6b45e691b83b..34ad0f2c84e3105327781f1601370ed98d28297d 100644
--- a/ash/wm/common/wm_globals.h
+++ b/ash/wm/common/wm_globals.h
@@ -54,6 +54,8 @@ class ASH_EXPORT WmGlobals {
   // the window size.
   virtual bool IsForceMaximizeOnFirstRun() = 0;
 
+  virtual bool IsScreenLocked() = 0;
+
   // See aura::client::CursorClient for details on these.
   virtual void LockCursor() = 0;
   virtual void UnlockCursor() = 0;