Disabled overscroll animation when the fullscreen app list feature is enabled.

ui/app_list/presenter/app_list_presenter_impl.h

 // Copyright 2016 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_PRESENTER_APP_LIST_PRESENTER_IMPL_H_
 #define UI_APP_LIST_PRESENTER_APP_LIST_PRESENTER_IMPL_H_
 
 #include <stdint.h>
 
 #include <memory>
@@ skipping 116 matching lines @@
   // The current page of the AppsGridView of |view_|. This is stored outside of
   // the view's PaginationModel, so that it persists when the view is destroyed.
   int current_apps_page_ = -1;
 
   // Cached bounds of |view_| for snapping back animation after over-scroll.
   gfx::Rect view_bounds_;
 
   // Whether should schedule snap back animation.
   bool should_snap_back_ = false;
 
+  // Whether the fullscreen app list feature is enabled;
+  const bool is_fullscreen_app_list_enabled_;
+
   // The app list interface pointer; used for reporting visibility changes.
   mojom::AppListPtr app_list_;
 
   DISALLOW_COPY_AND_ASSIGN(AppListPresenterImpl);
 };
 
 }  // namespace app_list
 
 #endif  // UI_APP_LIST_PRESENTER_APP_LIST_PRESENTER_IMPL_H_