Remove strong mode support from materialized literals.

src/parsing/preparser.h

Index: src/parsing/preparser.h
diff --git a/src/parsing/preparser.h b/src/parsing/preparser.h
index 253251c0734620ab3279cae4897e77cc0afcdfb7..b99d9852d19f82974333fe74ff9b7f3fa0def7b8 100644
--- a/src/parsing/preparser.h
+++ b/src/parsing/preparser.h
@@ -424,18 +424,17 @@ class PreParserFactory {
   }
   PreParserExpression NewRegExpLiteral(PreParserIdentifier js_pattern,
                                        int js_flags, int literal_index,
-                                       bool is_strong, int pos) {
+                                       int pos) {
     return PreParserExpression::Default();
   }
   PreParserExpression NewArrayLiteral(PreParserExpressionList values,
                                       int literal_index,
-                                      bool is_strong,
                                       int pos) {
     return PreParserExpression::ArrayLiteral();
   }
   PreParserExpression NewArrayLiteral(PreParserExpressionList values,
                                       int first_spread_index, int literal_index,
-                                      bool is_strong, int pos) {
+                                      int pos) {
     return PreParserExpression::ArrayLiteral();
   }
   PreParserExpression NewObjectLiteralProperty(PreParserExpression key,
@@ -455,7 +454,6 @@ class PreParserFactory {
                                        int literal_index,
                                        int boilerplate_properties,
                                        bool has_function,
-                                       bool is_strong,
                                        int pos) {
     return PreParserExpression::ObjectLiteral();
   }