Use std::unique_ptr for base::DictionaryValue and base::ListValue's internal store.

content/browser/android/java/gin_java_method_invocation_helper.h

Index: content/browser/android/java/gin_java_method_invocation_helper.h
diff --git a/content/browser/android/java/gin_java_method_invocation_helper.h b/content/browser/android/java/gin_java_method_invocation_helper.h
index b2c0992eaa4d17ef315f6bbe42d580cf6ae89a6f..6582ccfe6b17f792729fb6896af88f6682c003f1 100644
--- a/content/browser/android/java/gin_java_method_invocation_helper.h
+++ b/content/browser/android/java/gin_java_method_invocation_helper.h
@@ -73,12 +73,12 @@ class CONTENT_EXPORT GinJavaMethodInvocationHelper
   ~GinJavaMethodInvocationHelper();
 
   void BuildObjectRefsFromListValue(DispatcherDelegate* dispatcher,
-                                    const base::Value* list_value);
+                                    const base::Value& list_value);
   void BuildObjectRefsFromDictionaryValue(DispatcherDelegate* dispatcher,
-                                          const base::Value* dict_value);
+                                          const base::Value& dict_value);
 
   bool AppendObjectRef(DispatcherDelegate* dispatcher,
-                       const base::Value* raw_value);
+                       const base::Value& raw_value);
 
   void InvokeMethod(jobject object,
                     jclass clazz,