Change Painter factory functions to unique_ptr

ash/common/wm/window_cycle_list.cc

Index: ash/common/wm/window_cycle_list.cc
diff --git a/ash/common/wm/window_cycle_list.cc b/ash/common/wm/window_cycle_list.cc
index bc2f2d00c6011d74c6fa551a384e6e4e70bf33ab..fa458cd316abf62c329003cbdb31657ae8a138a6 100644
--- a/ash/common/wm/window_cycle_list.cc
+++ b/ash/common/wm/window_cycle_list.cc
@@ -247,9 +247,9 @@ class WindowCycleView : public views::WidgetDelegateView {
     // because the layer animates bounds changes but the View's bounds change
     // immediately.
     highlight_view_->set_background(new LayerFillBackgroundPainter(
-        base::WrapUnique(views::Painter::CreateRoundRectWith1PxBorderPainter(
+        views::Painter::CreateRoundRectWith1PxBorderPainter(
             SkColorSetA(SK_ColorWHITE, 0x4D), SkColorSetA(SK_ColorWHITE, 0x33),
-            kBackgroundCornerRadius))));
+            kBackgroundCornerRadius)));
     highlight_view_->SetPaintToLayer(true);
     highlight_view_->layer()->SetFillsBoundsOpaquely(false);