wm: Fade screen on signout.

window_manager.h

 // Copyright (c) 2010 The Chromium OS 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 WINDOW_MANAGER_WINDOW_MANAGER_H_
 #define WINDOW_MANAGER_WINDOW_MANAGER_H_
 
 #include <map>
 #include <set>
 #include <string>
@@ skipping 42 matching lines @@
 class WmIpc;
 template<class T> class Stacker;
 
 class WindowManager : public PanelManagerAreaChangeListener,
                       public CompositionChangeListener {
  public:
   // Visibility groups that actors can be added to.
   // See Compositor::SetActiveVisibilityGroups().
   enum VisibilityGroups {
     VISIBILITY_GROUP_SCREEN_LOCKER = 1,
-    VISIBILITY_GROUP_SHUTDOWN = 2,
+    VISIBILITY_GROUP_SESSION_ENDING = 2,
   };
 
   WindowManager(EventLoop* event_loop,
                 XConnection* xconn,
                 Compositor* compositor,
                 DBusInterface* dbus);
   virtual ~WindowManager();
 
   void set_initialize_logging(bool should_init) {
     initialize_logging_ = should_init;
@@ skipping 213 matching lines @@
 
   // Minimum number of seconds between updates to the
   // _CHROME_VIDEO_TIME property on the root window.
   static const int kVideoTimePropertyUpdateSec;
 
   // Is this one of our internally-created windows?
   bool IsInternalWindow(XWindow xid) {
     return (xid == stage_xid_ || xid == overlay_xid_ || xid == wm_xid_);
   }
 
-  // Are we in the process of shutting down?
-  bool IsShuttingDown() const;
+  // Are we in the process of shutting down or signing out?
+  bool IsSessionEnding() const;
 
   // Get a manager selection as described in ICCCM section 2.8.  'atom' is
   // the selection to take, 'manager_win' is the window acquiring the
   // selection, and 'timestamp' is the current time.
   bool GetManagerSelection(
       XAtom atom, XWindow manager_win, XTime timestamp);
 
   // Tell the previous window and compositing managers to exit and register
   // ourselves as the new managers.
   bool RegisterExistence();
@@ skipping 266 matching lines @@
 
   // Id for the timeout that calls PingChrome().
   int chrome_watchdog_timeout_id_;
 
   DISALLOW_COPY_AND_ASSIGN(WindowManager);
 };
 
 }  // namespace window_manager
 
 #endif  // WINDOW_MANAGER_WINDOW_MANAGER_H_