Change Painter factory functions to unique_ptr

ui/views/corewm/tooltip_aura.cc

Index: ui/views/corewm/tooltip_aura.cc
diff --git a/ui/views/corewm/tooltip_aura.cc b/ui/views/corewm/tooltip_aura.cc
index 4cce40b0498e12288c56ed6de286764cf6585096..478becc28997cc0be3bb9bbeaefb863d860f8510 100644
--- a/ui/views/corewm/tooltip_aura.cc
+++ b/ui/views/corewm/tooltip_aura.cc
@@ -126,8 +126,8 @@ class TooltipAura::TooltipView : public views::View {
     views::Background* background =
         CanUseTranslucentTooltipWidget()
             ? views::Background::CreateBackgroundPainter(
-                  true, views::Painter::CreateSolidRoundRectPainter(
-                            background_color, kTooltipCornerRadius))
+                  views::Painter::CreateSolidRoundRectPainter(
+                      background_color, kTooltipCornerRadius))
             : views::Background::CreateSolidBackground(background_color);
     set_background(background);
     // Force the text color to be readable when |background_color| is not