Remove non-MD code from TrayBackgroundView

ash/common/system/tray/tray_background_view.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_COMMON_SYSTEM_TRAY_TRAY_BACKGROUND_VIEW_H_
 #define ASH_COMMON_SYSTEM_TRAY_TRAY_BACKGROUND_VIEW_H_
 
 #include <memory>
 
 #include "ash/ash_export.h"
@@ skipping 42 matching lines @@
    private:
     void UpdateLayout();
 
     ShelfAlignment alignment_;
     int main_axis_margin_ = 0;
     int cross_axis_margin_ = 0;
 
     DISALLOW_COPY_AND_ASSIGN(TrayContainer);
   };
 
-  explicit TrayBackgroundView(WmShelf* wm_shelf);
+  // TODO(mohsen): Remove |draws_background| paramter when LogoutButtonTray, as
+  // the only reason for existence of this parameter, is no longer a
+  // TrayBackgroundView. See https://crbug.com/698134.
+  TrayBackgroundView(WmShelf* wm_shelf, bool draws_background);
   ~TrayBackgroundView() override;
 
   // Called after the tray has been added to the widget containing it.
   virtual void Initialize();
 
   // Initializes animations for the bubble.
   static void InitializeBubbleAnimations(views::Widget* bubble_widget);
 
   // views::View:
   void SetVisible(bool visible) override;
   const char* GetClassName() const override;
   void ChildPreferredSizeChanged(views::View* child) override;
   void GetAccessibleNodeData(ui::AXNodeData* node_data) override;
   void AboutToRequestFocusFromTabTraversal(bool reverse) override;
   void OnPaint(gfx::Canvas* canvas) override;
 
   // ActionableView:
   std::unique_ptr<views::InkDropRipple> CreateInkDropRipple() const override;
   std::unique_ptr<views::InkDropHighlight> CreateInkDropHighlight()
       const override;
-  void OnGestureEvent(ui::GestureEvent* event) override;
 
   // Called whenever the shelf alignment changes.
   virtual void SetShelfAlignment(ShelfAlignment alignment);
 
   // Called when the anchor (tray or bubble) may have moved or changed.
   virtual void AnchorUpdated() {}
 
   // Called from GetAccessibleNodeData, must return a valid accessible name.
   virtual base::string16 GetAccessibleNameForTray() = 0;
 
   // Called when the bubble is resized.
   virtual void BubbleResized(const views::TrayBubbleView* bubble_view) {}
 
   // Hides the bubble associated with |bubble_view|. Called when the widget
   // is closed.
   virtual void HideBubbleWithView(const views::TrayBubbleView* bubble_view) = 0;
 
   // Called by the bubble wrapper when a click event occurs outside the bubble.
   // May close the bubble.
   virtual void ClickedOutsideBubble() = 0;
 
-  // Sets |contents| as a child.
-  void SetContents(views::View* contents);
-
-  // Creates and sets contents background to |background_|. |draws_active|
-  // determines if the view's background should be drawn as active when the view
-  // is in the active state.
-  void SetContentsBackground(bool draws_active);
-
   // Returns the bubble anchor alignment based on |shelf_alignment_|.
   views::TrayBubbleView::AnchorAlignment GetAnchorAlignment() const;
 
   void SetIsActive(bool is_active);
   bool is_active() const { return is_active_; }
 
   TrayContainer* tray_container() const { return tray_container_; }
   ShelfAlignment shelf_alignment() const { return shelf_alignment_; }
   TrayEventFilter* tray_event_filter() { return tray_event_filter_.get(); }
   WmShelf* shelf() { return wm_shelf_; }
@@ skipping 47 matching lines @@
   // Convenience pointer to the contents view.
   TrayContainer* tray_container_;
 
   // Shelf alignment.
   // TODO(jamescook): Don't cache this, get it from WmShelf.
   ShelfAlignment shelf_alignment_;
 
   // Owned by the view passed to SetContents().
   TrayBackground* background_;
 
-  // Determines if the view is active. This changes how the background is drawn
-  // in non-MD version and how the ink drop ripples behave in MD version.
+  // Determines if the view is active. This changes how  the ink drop ripples
+  // behave.
   bool is_active_;
 
   // Visibility of this tray's separator which is a line of 1x32px and 4px to
   // right of tray.
   bool separator_visible_;
 
   std::unique_ptr<TrayWidgetObserver> widget_observer_;
   std::unique_ptr<TrayEventFilter> tray_event_filter_;
 
   DISALLOW_COPY_AND_ASSIGN(TrayBackgroundView);
 };
 
 }  // namespace ash
 
 #endif  // ASH_COMMON_SYSTEM_TRAY_TRAY_BACKGROUND_VIEW_H_