mash: Remove shelf util functions; use WmWindow properties.

ash/common/shelf/shelf_constants.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/common/shelf/shelf_constants.h"
 
 #include "ash/common/material_design/material_design_controller.h"
 #include "base/logging.h"
 #include "third_party/skia/include/core/SkColor.h"
 
 namespace ash {
 
-const int kInvalidImageResourceID = -1;
 const int kTimeToSwitchBackgroundMs = 1000;
 const int kWorkspaceAreaVisibleInset = 2;
 const int kWorkspaceAreaAutoHideInset = 5;
 const int kShelfAutoHideSize = 3;
 const int kShelfItemInset = 3;
 const SkColor kShelfBaseColor = SK_ColorBLACK;
 const SkColor kShelfButtonActivatedHighlightColor =
     SkColorSetA(SK_ColorWHITE, 100);
 const SkColor kShelfInkDropBaseColor = SK_ColorWHITE;
 const float kShelfInkDropVisibleOpacity = 0.2f;
@@ skipping 23 matching lines @@
     case SHELF_BUTTON_SIZE:
       return kShelfButtonSize[mode];
     case SHELF_INSETS_FOR_AUTO_HIDE:
       return kShelfInsetsForAutoHide[mode];
   }
   NOTREACHED();
   return 0;
 }
 
 }  // namespace ash