convert //headless to std::unique_ptr

headless/lib/browser/headless_web_contents_impl.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 "headless/lib/browser/headless_web_contents_impl.h"
 
 #include "base/bind.h"
+#include "base/memory/ptr_util.h"
 #include "base/memory/weak_ptr.h"
 #include "base/trace_event/trace_event.h"
 #include "content/public/browser/navigation_handle.h"
 #include "content/public/browser/render_frame_host.h"
 #include "content/public/browser/render_process_host.h"
 #include "content/public/browser/render_view_host.h"
 #include "content/public/browser/render_widget_host_view.h"
 #include "content/public/browser/web_contents.h"
 #include "content/public/browser/web_contents_delegate.h"
 #include "content/public/browser/web_contents_observer.h"
@@ skipping 69 matching lines @@
   content::NavigationController::LoadURLParams params(url);
   params.transition_type = ui::PageTransitionFromInt(
       ui::PAGE_TRANSITION_TYPED | ui::PAGE_TRANSITION_FROM_ADDRESS_BAR);
   web_contents_->GetController().LoadURLWithParams(params);
   web_contents_->Focus();
   return true;
 }
 
 void HeadlessWebContentsImpl::AddObserver(Observer* observer) {
   DCHECK(observer_map_.find(observer) == observer_map_.end());
-  observer_map_[observer] = make_scoped_ptr(
+  observer_map_[observer] = base::WrapUnique(
       new WebContentsObserverAdapter(web_contents_.get(), observer));
 }
 
 void HeadlessWebContentsImpl::RemoveObserver(Observer* observer) {
   ObserverMap::iterator it = observer_map_.find(observer);
   DCHECK(it != observer_map_.end());
   observer_map_.erase(it);
 }
 
 content::WebContents* HeadlessWebContentsImpl::web_contents() const {
   return web_contents_.get();
 }
 
 }  // namespace headless