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

chrome/browser/ui/webui/options/chromeos/cros_language_options_handler.h

Index: chrome/browser/ui/webui/options/chromeos/cros_language_options_handler.h
diff --git a/chrome/browser/ui/webui/options/chromeos/cros_language_options_handler.h b/chrome/browser/ui/webui/options/chromeos/cros_language_options_handler.h
index e2086e7ca62c6678d711cead3d966f3d0199d820..0a657c14e9a8c7f550b403a5fe4a0a3cccf540e0 100644
--- a/chrome/browser/ui/webui/options/chromeos/cros_language_options_handler.h
+++ b/chrome/browser/ui/webui/options/chromeos/cros_language_options_handler.h
@@ -5,6 +5,7 @@
 #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"
@@ -13,6 +14,10 @@
 #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 {
 
@@ -39,13 +44,14 @@ class CrosLanguageOptionsHandler
   //
   // 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: