mash: Move //ash/session to //ash/common/session

ash/aura/wm_shell_aura.h

Index: ash/aura/wm_shell_aura.h
diff --git a/ash/aura/wm_shell_aura.h b/ash/aura/wm_shell_aura.h
index 069355fb67d4965d804b6d73e8db67e763b818bb..34a15a1d928e8cc73c469a257ae68b54c5186770 100644
--- a/ash/aura/wm_shell_aura.h
+++ b/ash/aura/wm_shell_aura.h
@@ -38,8 +38,6 @@ class ASH_EXPORT WmShellAura : public WmShell,
   std::vector<WmWindow*> GetMruWindowList() override;
   std::vector<WmWindow*> GetMruWindowListIgnoreModals() override;
   bool IsForceMaximizeOnFirstRun() override;
-  bool IsUserSessionBlocked() override;
-  bool IsScreenLocked() override;
   bool CanShowWindowForUser(WmWindow* window) override;
   void LockCursor() override;
   void UnlockCursor() override;
@@ -50,6 +48,7 @@ class ASH_EXPORT WmShellAura : public WmShell,
       wm::WindowState* window_state) override;
   bool IsOverviewModeSelecting() override;
   bool IsOverviewModeRestoringMinimizedWindows() override;
+  SessionStateDelegate* GetSessionStateDelegate() override;
   void AddActivationObserver(WmActivationObserver* observer) override;
   void RemoveActivationObserver(WmActivationObserver* observer) override;
   void AddDisplayObserver(WmDisplayObserver* observer) override;