Implement handling of arrow functions in the parser

tools/generate-runtime-tests.py

 #!/usr/bin/env python
 # Copyright 2014 the V8 project authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import itertools
 import js2c
 import multiprocessing
 import optparse
 import os
@@ skipping 134 matching lines @@
                                        "function() {}", 2, None],
   "GetBreakLocations": [None, 0, None],
   "GetDefaultReceiver": ["function() {}", None],
   "GetImplFromInitializedIntlObject": ["new Intl.NumberFormat('en-US')", None],
   "InternalCompare": [_COLLATOR, None, None, None],
   "InternalDateFormat": [_DATETIME_FORMAT, None, None],
   "InternalDateParse": [_DATETIME_FORMAT, None, None],
   "InternalNumberFormat": [_NUMBER_FORMAT, None, None],
   "InternalNumberParse": [_NUMBER_FORMAT, None, None],
   "IsSloppyModeFunction": ["function() {}", None],
+  "FunctionIsArrow": ["() => {}", None],
   "LoadMutableDouble": ["{foo: 1.2}", None, None],
   "NewObjectFromBound": ["(function() {}).bind({})", None],
   "NumberToRadixString": [None, "2", None],
   "ParseJson": ["\"{}\"", 1],
   "RegExpExecMultiple": [None, None, "['a']", "['a']", None],
   "SetAccessorProperty": [None, None, "undefined", "undefined", None, None,
                           None],
   "SetCreateIterator": [None, "2", None],
   "SetDebugEventListener": ["undefined", None, None],
   "SetFunctionBreakPoint": [None, 200, None, None],
@@ skipping 1141 matching lines @@
       for i in range(len(processes)):
         processes[i].join()
     except KeyboardInterrupt:
       stop_running.set()
       for i in range(len(processes)):
         processes[i].join()
     return 0
 
 if __name__ == "__main__":
   sys.exit(Main())