Add running unit tests to run-bindings-tests.

third_party/WebKit/Tools/Scripts/run-bindings-tests

 #!/usr/bin/python
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 import sys
 
+from webkitpy import path_finder
+path_finder.find_typ_dir()
+
+import typ
+
 from webkitpy.bindings.bindings_tests import run_bindings_tests
 
 
 def main(argv):
     """Runs Blink bindings IDL compiler on test IDL files and compares the
     results with reference files.
 
     Please execute the script whenever changes are made to the compiler
     (this is automatically done as a presubmit script),
     and submit changes to the test results in the same patch.
     This makes it easier to track and review changes in generated code.
 
     Options:
        --reset-results: Overwrites reference files with the generated results.
        --verbose: Show output on success and logging messages (not just failure)
     """
     reset_results = '--reset-results' in argv
     verbose = '--verbose' in argv
 
-    return run_bindings_tests(reset_results, verbose)
+    return_code = run_bindings_tests(reset_results, verbose)
+    if return_code != 0:

[Yuki, 2016/12/06 07:59:42]

nit: Probably we'd like to run the unittests regardless of the result of
run_bindings_tests and would like to see both failing results?
Or typ.main first, then run_bindings_tests?

+        return return_code
 
+    return typ.main(top_level_dir=path_finder.get_bindings_scripts_dir(),
+                    win_multiprocessing='spawn')
 
 if __name__ == '__main__':
     sys.exit(main(sys.argv))