Convert //content/browser from scoped_ptr to std::unique_ptr

content/browser/host_zoom_map_impl.h

 // 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.
 
 #ifndef CONTENT_BROWSER_HOST_ZOOM_MAP_IMPL_H_
 #define CONTENT_BROWSER_HOST_ZOOM_MAP_IMPL_H_
 
 #include <map>
 #include <string>
 #include <tuple>
@@ skipping 38 matching lines @@
   bool UsesTemporaryZoomLevel(int render_process_id,
                               int render_view_id) const override;
   void SetTemporaryZoomLevel(int render_process_id,
                              int render_view_id,
                              double level) override;
 
   void ClearTemporaryZoomLevel(int render_process_id,
                                int render_view_id) override;
   double GetDefaultZoomLevel() const override;
   void SetDefaultZoomLevel(double level) override;
-  scoped_ptr<Subscription> AddZoomLevelChangedCallback(
+  std::unique_ptr<Subscription> AddZoomLevelChangedCallback(
       const ZoomLevelChangedCallback& callback) override;
 
   // Returns the current zoom level for the specified WebContents. This may
   // be a temporary zoom level, depending on UsesTemporaryZoomLevel().
   double GetZoomLevelForWebContents(
       const WebContentsImpl& web_contents_impl) const;
 
   bool PageScaleFactorIsOneForWebContents(
       const WebContentsImpl& web_contents_impl) const;
 
@@ skipping 89 matching lines @@
   mutable base::Lock lock_;
 
   NotificationRegistrar registrar_;
 
   DISALLOW_COPY_AND_ASSIGN(HostZoomMapImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_HOST_ZOOM_MAP_IMPL_H_