Use sk_sp-based shader creation APIs

chrome/browser/ui/libgtk2ui/gtk2_ui.cc

 // Copyright (c) 2012 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 "chrome/browser/ui/libgtk2ui/gtk2_ui.h"
 
 #include <math.h>
 #include <pango/pango.h>
 #include <set>
 #include <utility>
@@ skipping 1175 matching lines @@
   SkColor gradient_top_color = color_utils::HSLShift(base, kGtkFrameShift);
   int gradient_size;
 
   NativeThemeGtk2::instance()->GetChromeStyleColor(gradient_name,
                                                    &gradient_top_color);
   gtk_widget_style_get(NativeThemeGtk2::instance()->GetWindow(),
                        "frame-gradient-size", &gradient_size,
                        NULL);
 
   if (gradient_size) {
-    skia::RefPtr<SkShader> shader = gfx::CreateGradientShader(
-        0, gradient_size, gradient_top_color, base);
     SkPaint paint;
     paint.setStyle(SkPaint::kFill_Style);
     paint.setAntiAlias(true);
-    paint.setShader(shader.get());
+    paint.setShader(gfx::CreateGradientShader(
+        0, gradient_size, gradient_top_color, base));
 
     canvas.DrawRect(gfx::Rect(0, 0, kToolbarImageWidth, gradient_size), paint);
   }
 
   canvas.FillRect(gfx::Rect(0, gradient_size, kToolbarImageWidth,
                             kToolbarImageHeight - gradient_size), base);
   return canvas.ExtractImageRep().sk_bitmap();
 #else
   // Render a GtkHeaderBar as our title bar, cropping out any curved edges on
   // the left and right sides. Also remove the bottom border for good measure.
@@ skipping 166 matching lines @@
   // Blacklist scaling factors <130% (crbug.com/484400) and round
   // to 1 decimal to prevent rendering problems (crbug.com/485183).
   return scale < 1.3f ? 1.0f : roundf(scale * 10) / 10;
 }
 
 }  // namespace libgtk2ui
 
 views::LinuxUI* BuildGtk2UI() {
   return new libgtk2ui::Gtk2UI;
 }