Add ability to have active window autohide shelf

ash/common/shelf/shelf_layout_manager.h

 // Copyright 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_COMMON_SHELF_SHELF_LAYOUT_MANAGER_H_
 #define ASH_COMMON_SHELF_SHELF_LAYOUT_MANAGER_H_
 
 #include <memory>
 
 #include "ash/ash_export.h"
@@ skipping 264 matching lines @@
   // Called when the LoginUI changes from visible to invisible.
   void UpdateShelfVisibilityAfterLoginUIChange();
 
   // Compute |target_bounds| opacity based on gesture and shelf visibility.
   float ComputeTargetOpacity(const State& state);
 
   // Returns true if there is a fullscreen window open that causes the shelf
   // to be hidden.
   bool IsShelfHiddenForFullscreen() const;
 
+  // Returns true if there is a fullscreen or maximized window open that causes
+  // the shelf to be autohidden.
+  bool IsShelfAutoHideForFullscreenMaximized() const;
+
   // Gesture related functions:
   void StartGestureDrag(const ui::GestureEvent& gesture);
   void UpdateGestureDrag(const ui::GestureEvent& gesture);
   void CompleteGestureDrag(const ui::GestureEvent& gesture);
   void CancelGestureDrag();
 
   // True when inside UpdateBoundsAndOpacity() method. Used to prevent calling
   // UpdateBoundsAndOpacity() again from SetChildBounds().
   bool updating_bounds_;
 
@@ skipping 61 matching lines @@
   // The current shelf background. Should not be assigned to directly, use
   // MaybeUpdateShelfBackground() instead.
   ShelfBackgroundType shelf_background_type_;
 
   DISALLOW_COPY_AND_ASSIGN(ShelfLayoutManager);
 };
 
 }  // namespace ash
 
 #endif  // ASH_COMMON_SHELF_SHELF_LAYOUT_MANAGER_H_