virtual ~WindowOverviewModeDelegate() {}
// Called to activate |window|, set its bounds and set its visibility when
- // |window| is selected in overview mode. |window| is NULL if there are no
+ // |window| is selected in overview mode. |window| is nullptr if there are no
// windows in overview mode.
virtual void OnSelectWindow(aura::Window* window) = 0;
// Gets into split-view mode with |left| on the left-side of the screen, and
- // |right| on the right-side. If |left| or |right| is NULL, then the delegate
+ // |right| on the right-side. If |left| or |right| is nullptr, then the
+ // delegate
// selects the best option in its place.
virtual void OnSelectSplitViewWindow(aura::Window* left,
aura::Window* right,