cc: Move SkShader construction to a single spot in PaintShader

chrome/browser/ui/views/tabs/tab.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/views/tabs/tab.h"
 
 #include <stddef.h>
 #include <limits>
 #include <utility>
 
@@ skipping 100 matching lines @@
   return GetLayoutInsets(TAB).left() - 0.5f;
 }
 
 void DrawHighlight(gfx::Canvas* canvas,
                    const SkPoint& p,
                    SkScalar radius,
                    SkColor color) {
   const SkColor colors[2] = { color, SkColorSetA(color, 0) };
   cc::PaintFlags flags;
   flags.setAntiAlias(true);
-  flags.setShader(cc::WrapSkShader(SkGradientShader::MakeRadial(
-      p, radius, colors, nullptr, 2, SkShader::kClamp_TileMode)));
+  flags.setShader(base::MakeUnique<cc::PaintShader>(
+      p, radius, colors, nullptr, 2, SkShader::kClamp_TileMode));
   canvas->sk_canvas()->drawRect(
       SkRect::MakeXYWH(p.x() - radius, p.y() - radius, radius * 2, radius * 2),
       flags);
 }
 
 // Returns whether the favicon for the given URL should be colored according to
 // the browser theme.
 bool ShouldThemifyFaviconForUrl(const GURL& url) {
   return url.SchemeIs(content::kChromeUIScheme) &&
          url.host() != chrome::kChromeUIHelpHost &&
@@ skipping 1312 matching lines @@
 
   // Extends the area to the bottom when the crash animation is in progress.
   if (crash_icon_animation_->is_animating())
     bounds.set_height(height() - bounds.y());
   bounds.set_x(GetMirroredXForRect(bounds));
   SchedulePaintInRect(bounds);
 }
 
 Tab::BackgroundCache::BackgroundCache() = default;
 Tab::BackgroundCache::~BackgroundCache() = default;