Convert //chrome/browser/ui from scoped_ptr to std::unique_ptr

chrome/browser/ui/app_list/extension_app_item.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/app_list/extension_app_item.h"
 
 #include <stddef.h>
 
 #include "base/macros.h"
 #include "build/build_config.h"
@@ skipping 61 matching lines @@
   ~RoundedCornersImageSource() override {}
 
  private:
   // gfx::CanvasImageSource overrides:
   void Draw(gfx::Canvas* canvas) override {
     // The radius used to round the app icon.
     const size_t kRoundingRadius = 2;
 
     canvas->DrawImageInt(icon_, 0, 0);
 
-    scoped_ptr<gfx::Canvas> masking_canvas(
+    std::unique_ptr<gfx::Canvas> masking_canvas(
         new gfx::Canvas(gfx::Size(icon_.width(), icon_.height()), 1.0f, false));
     DCHECK(masking_canvas);
 
     SkPaint opaque_paint;
     opaque_paint.setColor(SK_ColorWHITE);
     opaque_paint.setFlags(SkPaint::kAntiAlias_Flag);
     masking_canvas->DrawRoundRect(
         gfx::Rect(icon_.width(), icon_.height()),
         kRoundingRadius, opaque_paint);
 
@@ skipping 243 matching lines @@
 }
 
 void ExtensionAppItem::UpdatePositionFromOrdering() {
   const syncer::StringOrdinal& page =
       GetAppSorting()->GetPageOrdinal(extension_id());
   const syncer::StringOrdinal& launch =
      GetAppSorting()->GetAppLaunchOrdinal(extension_id());
   set_position(syncer::StringOrdinal(
       page.ToInternalValue() + launch.ToInternalValue()));
 }