Fix ARM build.

src/builtins.cc

Index: src/builtins.cc
diff --git a/src/builtins.cc b/src/builtins.cc
index f86e27a0c2cbc5dd536530134fe1235f1a2263de..9db223039fa3aa90cd5f4c8535733811af4d2186 100644
--- a/src/builtins.cc
+++ b/src/builtins.cc
@@ -42,6 +42,9 @@ namespace {
 template <BuiltinExtraArguments extra_args>
 class BuiltinArguments : public Arguments {
  public:
+  BuiltinArguments(int length, Object** arguments)
+      : Arguments(length, arguments) { }
+
   Object*& operator[] (int index) {
     ASSERT(index < length());
     return Arguments::operator[](index);