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

chrome/browser/extensions/api/language_settings_private/language_settings_private_api.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 CHROME_BROWSER_EXTENSIONS_API_LANGUAGE_SETTINGS_PRIVATE_LANGUAGE_SETTINGS_PRIVATE_API_H_
 #define CHROME_BROWSER_EXTENSIONS_API_LANGUAGE_SETTINGS_PRIVATE_LANGUAGE_SETTINGS_PRIVATE_API_H_
 
 #include "base/macros.h"
 #include "chrome/browser/extensions/chrome_extension_function_details.h"
 #include "chrome/browser/spellchecker/spellcheck_custom_dictionary.h"
@@ skipping 74 matching lines @@
 
   // ExtensionFunction overrides.
   ResponseAction Run() override;
 
   // SpellcheckCustomDictionary::Observer overrides.
   void OnCustomDictionaryLoaded() override;
   void OnCustomDictionaryChanged(
       const SpellcheckCustomDictionary::Change& dictionary_change) override;
 
   // Returns the list of words from the loaded custom dictionary.
-  scoped_ptr<base::ListValue> GetSpellcheckWords() const;
+  std::unique_ptr<base::ListValue> GetSpellcheckWords() const;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(LanguageSettingsPrivateGetSpellcheckWordsFunction);
 };
 
 // Implements the languageSettingsPrivate.addSpellcheckWord method.
 class LanguageSettingsPrivateAddSpellcheckWordFunction
     : public UIThreadExtensionFunction {
  public:
   LanguageSettingsPrivateAddSpellcheckWordFunction();
@@ skipping 100 matching lines @@
   // ExtensionFunction overrides.
   ResponseAction Run() override;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(LanguageSettingsPrivateRemoveInputMethodFunction);
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_API_LANGUAGE_SETTINGS_PRIVATE_LANGUAGE_SETTINGS_PRIVATE_API_H_