Make UMA_HISTOGRAM_ENUMERATION work with scoped enums.

ash/common/shelf/shelf_view.cc

 // 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.
 
 #include "ash/common/shelf/shelf_view.h"
 
 #include <algorithm>
 #include <memory>
 
 #include "ash/common/ash_constants.h"
@@ skipping 37 matching lines @@
 #include "ui/views/view_model.h"
 #include "ui/views/view_model_utils.h"
 #include "ui/views/widget/widget.h"
 #include "ui/wm/core/coordinate_conversion.h"
 
 using gfx::Animation;
 using views::View;
 
 namespace ash {
 
-const int SHELF_ALIGNMENT_UMA_ENUM_VALUE_BOTTOM = 0;
-const int SHELF_ALIGNMENT_UMA_ENUM_VALUE_LEFT = 1;
-const int SHELF_ALIGNMENT_UMA_ENUM_VALUE_RIGHT = 2;
-const int SHELF_ALIGNMENT_UMA_ENUM_VALUE_COUNT = 3;
-
 // The proportion of the shelf space reserved for non-panel icons. Panels
 // may flow into this space but will be put into the overflow bubble if there
 // is contention for the space.
 const float kReservedNonPanelIconProportion = 0.67f;
 
 // The distance of the cursor from the outer rim of the shelf before it
 // separates.
 const int kRipOffDistance = 48;
 
 // The rip off drag and drop proxy image should get scaled by this factor.
@@ skipping 1688 matching lines @@
 
 int ShelfView::CalculateShelfDistance(const gfx::Point& coordinate) const {
   const gfx::Rect bounds = GetBoundsInScreen();
   int distance = wm_shelf_->SelectValueForShelfAlignment(
       bounds.y() - coordinate.y(), coordinate.x() - bounds.right(),
       bounds.x() - coordinate.x());
   return distance > 0 ? distance : 0;
 }
 
 }  // namespace ash