Removes most of aura dependencies from DefaultState

ash/wm/aura/wm_globals_aura.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_AURA_WM_GLOBALS_AURA_H_
 #define ASH_WM_AURA_WM_GLOBALS_AURA_H_
 
 #include <set>
 
 #include "ash/ash_export.h"
 #include "ash/wm/common/wm_globals.h"
 #include "base/macros.h"
 
 namespace ash {
 namespace wm {
 
 class ASH_EXPORT WmGlobalsAura : public WmGlobals {
  public:
   WmGlobalsAura();
   ~WmGlobalsAura() override;
 
   static WmGlobalsAura* Get();
 
   // WmGlobals:
   WmWindow* GetActiveWindow() override;
+  WmWindow* GetRootWindowForDisplayId(int64_t display_id) override;
   WmWindow* GetRootWindowForNewWindows() override;
   std::vector<WmWindow*> GetMruWindowListIgnoreModals() override;
   bool IsForceMaximizeOnFirstRun() override;
   std::vector<WmWindow*> GetAllRootWindows() override;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(WmGlobalsAura);
 };
 
 }  // namespace wm
 }  // namespace ash
 
 #endif  // ASH_WM_AURA_WM_GLOBALS_AURA_H_