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

extensions/browser/api/storage/storage_frontend.h

 // 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.
 
 #ifndef EXTENSIONS_BROWSER_API_STORAGE_STORAGE_FRONTEND_H_
 #define EXTENSIONS_BROWSER_API_STORAGE_STORAGE_FRONTEND_H_
 
 #include <map>
+#include <memory>
 #include <string>
 
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
-#include "base/memory/scoped_ptr.h"
 #include "extensions/browser/api/storage/settings_namespace.h"
 #include "extensions/browser/api/storage/settings_observer.h"
 #include "extensions/browser/api/storage/value_store_cache.h"
 #include "extensions/browser/browser_context_keyed_api_factory.h"
 
 namespace content {
 class BrowserContext;
 }
 
 namespace extensions {
 
 class ValueStoreFactory;
 
 // The component of the Storage API which runs on the UI thread.
 class StorageFrontend : public BrowserContextKeyedAPI {
  public:
   // Returns the current instance for |context|.
   static StorageFrontend* Get(content::BrowserContext* context);
 
   // Creates with a specific |storage_factory|.
-  static scoped_ptr<StorageFrontend> CreateForTesting(
+  static std::unique_ptr<StorageFrontend> CreateForTesting(
       const scoped_refptr<ValueStoreFactory>& storage_factory,
       content::BrowserContext* context);
 
   // Public so tests can create and delete their own instances.
   ~StorageFrontend() override;
 
   // Returns the value store cache for |settings_namespace|.
   ValueStoreCache* GetValueStoreCache(
       settings_namespace::Namespace settings_namespace) const;
 
@@ skipping 35 matching lines @@
 
   void Init(const scoped_refptr<ValueStoreFactory>& storage_factory);
 
   // The (non-incognito) browser context this Frontend belongs to.
   content::BrowserContext* const browser_context_;
 
   // List of observers to settings changes.
   scoped_refptr<SettingsObserverList> observers_;
 
   // Observer for |browser_context_|.
-  scoped_ptr<SettingsObserver> browser_context_observer_;
+  std::unique_ptr<SettingsObserver> browser_context_observer_;
 
   // Maps a known namespace to its corresponding ValueStoreCache. The caches
   // are owned by this object.
   CacheMap caches_;
 
   DISALLOW_COPY_AND_ASSIGN(StorageFrontend);
 };
 
 }  // namespace extensions
 
 #endif  // EXTENSIONS_BROWSER_API_STORAGE_STORAGE_FRONTEND_H_