ash: Clean up shelf GetAlignment() and IsHorizontalAlignment() calls

ash/common/shelf/overflow_bubble_view.h

 // Copyright 2013 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_OVERFLOW_BUBBLE_VIEW_H_
 #define ASH_COMMON_SHELF_OVERFLOW_BUBBLE_VIEW_H_
 
 #include "ash/ash_export.h"
 #include "base/macros.h"
 #include "ui/views/bubble/bubble_dialog_delegate.h"
@@ skipping 22 matching lines @@
 
   // views::BubbleDialogDelegateView overrides:
   int GetDialogButtons() const override;
   void OnBeforeBubbleWidgetInit(views::Widget::InitParams* params,
                                 views::Widget* bubble_widget) const override;
   gfx::Rect GetBubbleBounds() override;
 
  private:
   friend class test::OverflowBubbleViewTestAPI;
 
-  bool IsHorizontalAlignment() const;
-
   const gfx::Size GetContentsSize() const;
 
   // Gets arrow location based on shelf alignment.
   views::BubbleBorder::Arrow GetBubbleArrow() const;
 
   void ScrollByXOffset(int x_offset);
   void ScrollByYOffset(int y_offset);
 
   // views::View overrides:
   gfx::Size GetPreferredSize() const override;
   void Layout() override;
   void ChildPreferredSizeChanged(views::View* child) override;
   bool OnMouseWheel(const ui::MouseWheelEvent& event) override;
 
   // ui::EventHandler overrides:
   void OnScrollEvent(ui::ScrollEvent* event) override;
 
   WmShelf* wm_shelf_;
   views::View* shelf_view_;  // Owned by views hierarchy.
   gfx::Vector2d scroll_offset_;
 
   DISALLOW_COPY_AND_ASSIGN(OverflowBubbleView);
 };
 
 }  // namespace ash
 
 #endif  // ASH_COMMON_SHELF_OVERFLOW_BUBBLE_VIEW_H_