Refactors StackingController::GetDefaultParent to ash/wm/common

ash/wm/common/wm_globals.h

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef ASH_WM_COMMON_WM_GLOBALS_H_
 #define ASH_WM_COMMON_WM_GLOBALS_H_
 
 #include <stdint.h>
 
 #include <memory>
@@ skipping 41 matching lines @@
   virtual WmWindow* GetRootWindowForNewWindows() = 0;
 
   // returns the list of more recently used windows excluding modals.
   virtual std::vector<WmWindow*> GetMruWindowListIgnoreModals() = 0;
 
   // Returns true if the first window shown on first run should be
   // unconditionally maximized, overriding the heuristic that normally chooses
   // the window size.
   virtual bool IsForceMaximizeOnFirstRun() = 0;
 
+  virtual bool IsUserSessionBlocked() = 0;
   virtual bool IsScreenLocked() = 0;
 
   // See aura::client::CursorClient for details on these.
   virtual void LockCursor() = 0;
   virtual void UnlockCursor() = 0;
 
   virtual std::vector<WmWindow*> GetAllRootWindows() = 0;
 
   virtual void RecordUserMetricsAction(WmUserMetricsAction action) = 0;
 
@@ skipping 19 matching lines @@
   virtual void RemoveOverviewModeObserver(WmOverviewModeObserver* observer) = 0;
 
  private:
   static WmGlobals* instance_;
 };
 
 }  // namespace wm
 }  // namespace ash
 
 #endif  // ASH_WM_COMMON_WM_GLOBALS_H_