Stop passing raw pointers to base::Value API in c/b/ui

chrome/browser/ui/webui/options/chromeos/cros_language_options_handler.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 CHROME_BROWSER_UI_WEBUI_OPTIONS_CHROMEOS_CROS_LANGUAGE_OPTIONS_HANDLER_H_
 #define CHROME_BROWSER_UI_WEBUI_OPTIONS_CHROMEOS_CROS_LANGUAGE_OPTIONS_HANDLER_H_
 
+#include <memory>
 #include <string>
 
 #include "base/compiler_specific.h"
 #include "base/macros.h"
 #include "chrome/browser/ui/webui/options/language_options_handler.h"
 #include "ui/base/ime/chromeos/component_extension_ime_manager.h"
 #include "ui/base/ime/chromeos/input_method_descriptor.h"
 
+namespace base {
+class ListValue;
+}
+
 namespace chromeos {
 namespace options {
 
 // Language options page UI handler for Chrome OS.  For non-Chrome OS,
 // see LanguageOptionsHnadler.
 class CrosLanguageOptionsHandler
     : public ::options::LanguageOptionsHandlerCommon {
  public:
   CrosLanguageOptionsHandler();
   ~CrosLanguageOptionsHandler() override;
 
   // OptionsPageUIHandler implementation.
   void GetLocalizedValues(base::DictionaryValue* localized_strings) override;
 
   // DOMMessageHandler implementation.
   void RegisterMessages() override;
 
   // The following static methods are public for ease of testing.
 
   // Gets the list of supported input methods.
   // The return value will look like:
   // [{'id': 'pinyin', 'displayName': 'Pinyin',
   //   'languageCodeSet': {'zh-CW': true}},  ...]
   //
   // Note that true in languageCodeSet does not mean anything. We just use
   // the dictionary as a set.
-  static base::ListValue* GetInputMethodList();
+  static std::unique_ptr<base::ListValue> GetInputMethodList();
 
   // Converts input method descriptors to the list of input methods.
   // The return value will look like:
   // [{'id': '_ext_ime_nejguenhnsnjnwychcnsdsdjketest',
   //   'displayName': 'Sample IME'},  ...]
-  static base::ListValue* ConvertInputMethodDescriptorsToIMEList(
+  static std::unique_ptr<base::ListValue>
+  ConvertInputMethodDescriptorsToIMEList(
       const input_method::InputMethodDescriptors& descriptors);
 
  private:
   // LanguageOptionsHandlerCommon implementation.
   void SetApplicationLocale(const std::string& language_code) override;
 
   // Called when the sign-out button is clicked.
   void RestartCallback(const base::ListValue* args);
 
   // Called when the input method is disabled.
@@ skipping 12 matching lines @@
   // |list| of extension IMEs.
   void AddImeProvider(base::ListValue* list);
 
   DISALLOW_COPY_AND_ASSIGN(CrosLanguageOptionsHandler);
 };
 
 }  // namespace options
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_UI_WEBUI_OPTIONS_CHROMEOS_CROS_LANGUAGE_OPTIONS_HANDLER_H_