Make 'module' a context-sensitive keyword.

src/scanner.cc

 // Copyright 2011 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 832 matching lines @@
   KEYWORD("if", Token::IF)                                          \
   KEYWORD("implements", Token::FUTURE_STRICT_RESERVED_WORD)         \
   KEYWORD("import", harmony_modules                                 \
                     ? Token::IMPORT : Token::FUTURE_RESERVED_WORD)  \
   KEYWORD("in", Token::IN)                                          \
   KEYWORD("instanceof", Token::INSTANCEOF)                          \
   KEYWORD("interface", Token::FUTURE_STRICT_RESERVED_WORD)          \
   KEYWORD_GROUP('l')                                                \
   KEYWORD("let", harmony_scoping                                    \
                  ? Token::LET : Token::FUTURE_STRICT_RESERVED_WORD) \
-  KEYWORD_GROUP('m')                                                \
-  KEYWORD("module", harmony_modules                                 \
-                    ? Token::MODULE : Token::IDENTIFIER)            \
   KEYWORD_GROUP('n')                                                \
   KEYWORD("new", Token::NEW)                                        \
   KEYWORD("null", Token::NULL_LITERAL)                              \
   KEYWORD_GROUP('p')                                                \
   KEYWORD("package", Token::FUTURE_STRICT_RESERVED_WORD)            \
   KEYWORD("private", Token::FUTURE_STRICT_RESERVED_WORD)            \
   KEYWORD("protected", Token::FUTURE_STRICT_RESERVED_WORD)          \
   KEYWORD("public", Token::FUTURE_STRICT_RESERVED_WORD)             \
   KEYWORD_GROUP('r')                                                \
   KEYWORD("return", Token::RETURN)                                  \
@@ skipping 216 matching lines @@
       }
     }
   }
   literal.Complete();
 
   next_.location.end_pos = source_pos() - 1;
   return true;
 }
 
 } }  // namespace v8::internal