Some linked_ptr -> unique_ptr conversion in extensions/browser.

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>
 
-#include "base/memory/linked_ptr.h"
 #include "base/memory/ref_counted.h"
 #include "base/scoped_observer.h"
 #include "components/keyed_service/core/keyed_service.h"
 #include "extensions/browser/extension_registry_observer.h"
 
 namespace content {
 class BrowserContext;
 }
 
 namespace extensions {
@@ skipping 22 matching lines @@
   // 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_;
+  std::map<std::string, std::unique_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_;
+  std::map<std::string, std::unique_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_