Proper handling of future reserved words in strict and normal mode.

src/preparser.h

Index: src/preparser.h
diff --git a/src/preparser.h b/src/preparser.h
index afd3bc347590128b3d8226ae2be1294ce025d346..9ec2e032462d04b121d90fe20d9f6b55e5028f22 100644
--- a/src/preparser.h
+++ b/src/preparser.h
@@ -93,16 +93,23 @@ class PreParser {
     static Identifier FutureReserved()  {
       return Identifier(kFutureReservedIdentifier);
     }
+    static Identifier FutureStrictReserved()  {
+      return Identifier(kFutureStrictReservedIdentifier);
+    }
     bool IsEval() { return type_ == kEvalIdentifier; }
     bool IsArguments() { return type_ == kArgumentsIdentifier; }
     bool IsEvalOrArguments() { return type_ >= kEvalIdentifier; }
     bool IsFutureReserved() { return type_ == kFutureReservedIdentifier; }
+    bool IsFutureStrictReserved() {
+      return type_ == kFutureStrictReservedIdentifier;
+    }
     bool IsValidStrictVariable() { return type_ == kUnknownIdentifier; }
 
    private:
     enum Type {
       kUnknownIdentifier,
       kFutureReservedIdentifier,
+      kFutureStrictReservedIdentifier,
       kEvalIdentifier,
       kArgumentsIdentifier
     };
@@ -411,7 +418,7 @@ class PreParser {
 
   Identifier ParseIdentifier(bool* ok);
   Identifier ParseIdentifierName(bool* ok);
-  Identifier ParseIdentifierOrGetOrSet(bool* is_get, bool* is_set, bool* ok);
+  Identifier ParseIdentifierNameOrGetOrSet(bool* is_get, bool* is_set, bool* ok);
 
   // Logs the currently parsed literal as a symbol in the preparser data.
   void LogSymbol();