Add a library suitable for libfuzzer with a small unit test runner shell

tools/run-tests.py

 #!/usr/bin/env python
 #
 # Copyright 2012 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
@@ skipping 42 matching lines @@
 
 # Base dir of the v8 checkout to be used as cwd.
 BASE_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
 
 ARCH_GUESS = utils.DefaultArch()
 
 # Map of test name synonyms to lists of test suites. Should be ordered by
 # expected runtimes (suites with slow test cases first). These groups are
 # invoked in seperate steps on the bots.
 TEST_MAP = {
+  # This needs to stay in sync with test/bot_default.isolate.
   "bot_default": [
     "mjsunit",
     "cctest",
     "webkit",
+    "fuzzer",
     "message",
     "preparser",
     "intl",
     "unittests",
   ],
+  # This needs to stay in sync with test/default.isolate.
   "default": [
     "mjsunit",
     "cctest",
+    "fuzzer",
     "message",
     "preparser",
     "intl",
     "unittests",
   ],
+  # This needs to stay in sync with test/ignition.isolate.
   "ignition": [
     "mjsunit",
     "cctest",
   ],
+  # This needs to stay in sync with test/optimize_for_size.isolate.
   "optimize_for_size": [
     "mjsunit",
     "cctest",
     "webkit",
     "intl",
   ],
   "unittests": [
     "unittests",
   ],
 }
@@ skipping 713 matching lines @@
   if exit_code == 1 and options.json_test_results:
     print("Force exit code 0 after failures. Json test results file generated "
           "with failure information.")
     exit_code = 0
 
   return exit_code
 
 
 if __name__ == "__main__":
   sys.exit(Main())