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

extensions/browser/guest_view/mime_handler_view/mime_handler_stream_manager.h

 // 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.
 
 #ifndef EXTENSIONS_BROWSER_GUEST_VIEW_MIME_HANDLER_VIEW_MIME_HANDLER_STREAM_MANAGER_H_
 #define EXTENSIONS_BROWSER_GUEST_VIEW_MIME_HANDLER_VIEW_MIME_HANDLER_STREAM_MANAGER_H_
 
 #include <map>
 #include <set>
 #include <string>
@@ skipping 18 matching lines @@
 // BrowserContext-keyed because mime handlers are extensions, which are
 // per-BrowserContext.
 class MimeHandlerStreamManager : public KeyedService,
                                  public ExtensionRegistryObserver {
  public:
   MimeHandlerStreamManager();
   ~MimeHandlerStreamManager() override;
   static MimeHandlerStreamManager* Get(content::BrowserContext* context);
 
   void AddStream(const std::string& view_id,
-                 scoped_ptr<StreamContainer> stream,
+                 std::unique_ptr<StreamContainer> stream,
                  int render_process_id,
                  int render_frame_id);
 
-  scoped_ptr<StreamContainer> ReleaseStream(const std::string& view_id);
+  std::unique_ptr<StreamContainer> ReleaseStream(const std::string& view_id);
 
   // ExtensionRegistryObserver override.
   void OnExtensionUnloaded(content::BrowserContext* browser_context,
                            const Extension* extension,
                            UnloadedExtensionInfo::Reason reason) override;
 
  private:
   class EmbedderObserver;
 
   // Maps view id->StreamContainer to maintain their lifetime until they are
   // used or removed.
   std::map<std::string, linked_ptr<StreamContainer>> streams_;
 
   // Maps extension id->view id for removing the associated streams when an
   // extension is unloaded.
   std::map<std::string, std::set<std::string>> streams_by_extension_id_;
 
   // Maps view id->EmbedderObserver for maintaining the lifetime of the
   // EmbedderObserver until it is removed.
   std::map<std::string, linked_ptr<EmbedderObserver>> embedder_observers_;
 
   ScopedObserver<ExtensionRegistry, ExtensionRegistryObserver>
       extension_registry_observer_;
 };
 
 }  // namespace extensions
 
 #endif  // EXTENSIONS_BROWSER_GUEST_VIEW_MIME_HANDLER_VIEW_MIME_HANDLER_STREAM_MANAGER_H_