Convert //cc from scoped_ptr to std::unique_ptr.

cc/blink/scrollbar_impl.cc

 // Copyright 2014 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 "cc/blink/scrollbar_impl.h"
 
 #include "base/logging.h"
 #include "third_party/WebKit/public/platform/WebScrollbar.h"
 #include "third_party/WebKit/public/platform/WebScrollbarThemeGeometry.h"
 
 using blink::WebScrollbar;
 
 namespace cc_blink {
 
 ScrollbarImpl::ScrollbarImpl(
-    scoped_ptr<WebScrollbar> scrollbar,
+    std::unique_ptr<WebScrollbar> scrollbar,
     blink::WebScrollbarThemePainter painter,
-    scoped_ptr<blink::WebScrollbarThemeGeometry> geometry)
+    std::unique_ptr<blink::WebScrollbarThemeGeometry> geometry)
     : scrollbar_(std::move(scrollbar)),
       painter_(painter),
       geometry_(std::move(geometry)) {}
 
 ScrollbarImpl::~ScrollbarImpl() {
 }
 
 cc::ScrollbarOrientation ScrollbarImpl::Orientation() const {
   if (scrollbar_->orientation() == WebScrollbar::Horizontal)
     return cc::HORIZONTAL;
@@ skipping 79 matching lines @@
   bool thumb_present = geometry_->hasThumb(scrollbar_.get());
   if (thumb_present) {
     painter_.paintForwardTrackPart(canvas, track_paint_rect);
     painter_.paintBackTrackPart(canvas, track_paint_rect);
   }
 
   painter_.paintTickmarks(canvas, track_paint_rect);
 }
 
 }  // namespace cc_blink