Remove some platform specific stuff from views.

ui/app_list/app_list_item_list_observer.h

Index: ui/app_list/app_list_item_list_observer.h
diff --git a/ui/app_list/app_list_item_list_observer.h b/ui/app_list/app_list_item_list_observer.h
deleted file mode 100644
index 32344ea528f8f9bebee6e0603ade05f085c30fd0..0000000000000000000000000000000000000000
--- a/ui/app_list/app_list_item_list_observer.h
+++ /dev/null
@@ -1,40 +0,0 @@
-// Copyright (c) 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 UI_APP_LIST_APP_LIST_ITEM_LIST_OBSERVER_H_
-#define UI_APP_LIST_APP_LIST_ITEM_LIST_OBSERVER_H_
-
-#include "base/basictypes.h"
-#include "ui/app_list/app_list_export.h"
-
-namespace app_list {
-
-class AppListItem;
-
-class APP_LIST_EXPORT AppListItemListObserver {
- public:
-  // Triggered after |item| has been added to the list at |index|.
-  virtual void OnListItemAdded(size_t index, AppListItem* item) {}
-
-  // Triggered after an item has been removed from the list at |index|, just
-  // before the item is deleted.
-  virtual void OnListItemRemoved(size_t index, AppListItem* item) {}
-
-  // Triggered after |item| has been moved from |from_index| to |to_index|.
-  // Note: |from_index| may equal |to_index| if only the ordinal has changed.
-  virtual void OnListItemMoved(size_t from_index,
-                               size_t to_index,
-                               AppListItem* item) {}
-
-  // Triggered after the item at the corresponding index in the top level has
-  // started or completed installing and should be highlighted.
-  virtual void OnAppListItemHighlight(size_t index, bool highlight) {}
-
- protected:
-  virtual ~AppListItemListObserver() {}
-};
-
-}  // namespace app_list
-
-#endif  // UI_APP_LIST_APP_LIST_ITEM_LIST_OBSERVER_H_