Clean up some ash constants.

ash/shelf/overflow_button.cc

 // 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.
 
 #include "ash/shelf/overflow_button.h"
 
 #include "ash/resources/vector_icons/vector_icons.h"
 #include "ash/shelf/shelf_constants.h"
 #include "ash/shelf/shelf_view.h"
 #include "ash/shelf/wm_shelf.h"
@@ skipping 153 matching lines @@
       *chevron_image_,
       bounds.x() + ((bounds.width() - chevron_image_->width()) / 2),
       bounds.y() + ((bounds.height() - chevron_image_->height()) / 2));
 }
 
 gfx::Rect OverflowButton::CalculateButtonBounds() const {
   ShelfAlignment alignment = wm_shelf_->GetAlignment();
   gfx::Rect content_bounds = GetContentsBounds();
   // Align the button to the top of a bottom-aligned shelf, to the right edge
   // a left-aligned shelf, and to the left edge of a right-aligned shelf.
-  const int inset = (GetShelfConstant(SHELF_SIZE) - kOverflowButtonSize) / 2;
+  const int inset = (kShelfSize - kOverflowButtonSize) / 2;
   const int x = alignment == SHELF_ALIGNMENT_LEFT
                     ? content_bounds.right() - inset - kOverflowButtonSize
                     : content_bounds.x() + inset;
   return gfx::Rect(x, content_bounds.y() + inset, kOverflowButtonSize,
                    kOverflowButtonSize);
 }
 
 }  // namespace ash