Expose Value::GetList and Value(ListStorage) on ListValue

base/values.h

Index: base/values.h
diff --git a/base/values.h b/base/values.h
index 99b30fc67cd0276d06e5ae1f36d1e0fb195ad777..3cec9e9e7b7a4614311627f4a5e0b0f41caea7c6 100644
--- a/base/values.h
+++ b/base/values.h
@@ -383,6 +383,8 @@ class BASE_EXPORT ListValue : public Value {
   static std::unique_ptr<ListValue> From(std::unique_ptr<Value> value);
 
   ListValue();
+  explicit ListValue(const ListStorage& in_list);
+  explicit ListValue(ListStorage&& in_list) noexcept;
 
   // Clears the contents of this ListValue
   void Clear();
@@ -430,6 +432,8 @@ class BASE_EXPORT ListValue : public Value {
   bool GetBinary(size_t index, Value** out_value);
   bool GetDictionary(size_t index, const DictionaryValue** out_value) const;
   bool GetDictionary(size_t index, DictionaryValue** out_value);
+
+  using Value::GetList;
   bool GetList(size_t index, const ListValue** out_value) const;
   bool GetList(size_t index, ListValue** out_value);