Allow escape sequences in Constructor/Prototype tokens in PreParserTraits::GetSymbol()

src/preparser.cc

Index: src/preparser.cc
diff --git a/src/preparser.cc b/src/preparser.cc
index 3173cc0f900255aa1d764736d8c6f70d51da0ddb..edf3f77bed193d31422b1050a160653ce10aecb8 100644
--- a/src/preparser.cc
+++ b/src/preparser.cc
@@ -78,10 +78,10 @@ PreParserIdentifier PreParserTraits::GetSymbol(Scanner* scanner) {
   if (scanner->UnescapedLiteralMatches("arguments", 9)) {
     return PreParserIdentifier::Arguments();
   }
-  if (scanner->UnescapedLiteralMatches("prototype", 9)) {
+  if (scanner->LiteralMatches("prototype", 9)) {

[caitp (gmail), 2014/10/09 13:38:43]

actually, given
https://people.mozilla.org/~jorendorff/es6-draft.html#sec-names-and-keywords,
this same behaviour probably should apply to `eval` and `arguments`, too

     return PreParserIdentifier::Prototype();
   }
-  if (scanner->UnescapedLiteralMatches("constructor", 11)) {
+  if (scanner->LiteralMatches("constructor", 11)) {
     return PreParserIdentifier::Constructor();
   }
   return PreParserIdentifier::Default();