mash: Replace ShelfItemDelegate::CanPin with ShelfItem::pinned_by_policy.

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 1333 matching lines @@
   }
   DestroyDragIconProxy();
 }
 
 ShelfView::RemovableState ShelfView::RemovableByRipOff(int index) const {
   DCHECK(index >= 0 && index < model_->item_count());
   ShelfItemType type = model_->items()[index].type;
   if (type == TYPE_APP_LIST || type == TYPE_DIALOG)
     return NOT_REMOVABLE;
 
+  if (model_->items()[index].pinned_by_policy)
+    return NOT_REMOVABLE;
+
+  // Note: Only pinned app shortcuts can be removed!
   std::string app_id = delegate_->GetAppIDForShelfID(model_->items()[index].id);
-  ShelfItemDelegate* item_delegate =
-      model_->GetShelfItemDelegate(model_->items()[index].id);
-  if (!item_delegate->CanPin())
-    return NOT_REMOVABLE;
-  // Note: Only pinned app shortcuts can be removed!
   return (type == TYPE_APP_SHORTCUT && delegate_->IsAppPinned(app_id))
              ? REMOVABLE
              : DRAGGABLE;
 }
 
 bool ShelfView::SameDragType(ShelfItemType typea, ShelfItemType typeb) const {
   switch (typea) {
     case TYPE_APP_SHORTCUT:
     case TYPE_BROWSER_SHORTCUT:
       return (typeb == TYPE_APP_SHORTCUT || typeb == TYPE_BROWSER_SHORTCUT);
@@ skipping 511 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