Sets the background color of shelf is opaque black when maximized (2nd)

ash/wm/workspace/workspace_manager.h

 // Copyright (c) 2012 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_WORKSPACE_WORKSPACE_MANAGER_H_
 #define ASH_WM_WORKSPACE_WORKSPACE_MANAGER_H_
 
 #include <set>
 #include <string>
 #include <vector>
@@ skipping 93 matching lines @@
   class LayoutManagerImpl;
 
   typedef std::vector<Workspace*> Workspaces;
 
   // Reason for the workspace switch. Used to determine the characteristics of
   // the animation.
   enum SwitchReason {
     SWITCH_WINDOW_MADE_ACTIVE,
     SWITCH_WINDOW_REMOVED,
     SWITCH_VISIBILITY_CHANGED,
-    SWITCH_BACKGROUND_ONLY_WITHIN_DESKTOP,
     SWITCH_MINIMIZED,
     SWITCH_MAXIMIZED_OR_RESTORED,
     // Switch a normal window in a fullscreen workspace to get fullscreen.
     // TODO(mukai): this should be removed in the future. Normal windows should
     // not be in a fullscreen workspace.  See crbug.com/249154
     SWITCH_FULLSCREEN_FROM_FULLSCREEN_WORKSPACE,
     SWITCH_TRACKED_BY_WORKSPACE_CHANGED,
 
     // Switch as the result of DoInitialAnimation(). This isn't a real switch,
     // rather we run the animations as if a switch occurred.
@@ skipping 151 matching lines @@
   // finger vertical scroll.
   scoped_ptr<WorkspaceCycler> workspace_cycler_;
 
   DISALLOW_COPY_AND_ASSIGN(WorkspaceManager);
 };
 
 }  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_WM_WORKSPACE_WORKSPACE_MANAGER_H_