Change Painter factory functions to unique_ptr

ui/views/controls/button/md_text_button.cc

 // Copyright 2015 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.
 
 #include "ui/views/controls/button/md_text_button.h"
 
 #include "base/i18n/case_conversion.h"
 #include "base/memory/ptr_util.h"
 #include "ui/base/material_design/material_design_controller.h"
 #include "ui/gfx/canvas.h"
@@ skipping 281 matching lines @@
 
   // Disabled, non-prominent buttons need their stroke lightened. Prominent
   // buttons need it left at SK_ColorTRANSPARENT from above.
   if (state() == STATE_DISABLED && !is_prominent_) {
     stroke_color = color_utils::BlendTowardOppositeLuma(
         stroke_color, gfx::kDisabledControlAlpha);
   }
 
   DCHECK_EQ(SK_AlphaOPAQUE, static_cast<int>(SkColorGetA(bg_color)));
   set_background(Background::CreateBackgroundPainter(
-      true, Painter::CreateRoundRectWith1PxBorderPainter(
-                bg_color, stroke_color, kInkDropSmallCornerRadius)));
+      Painter::CreateRoundRectWith1PxBorderPainter(bg_color, stroke_color,
+                                                   kInkDropSmallCornerRadius)));
 }
 
 }  // namespace views