Updating isolated scripts to ignore chartjson results dir flag.

testing/scripts/run_telemetry_as_googletest.py

 #!/usr/bin/env python
 # Copyright 2015 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 """Runs isolate bundled Telemetry unittests.
 
 This script attempts to emulate the contract of gtest-style tests
 invoked via recipes. The main contract is that the caller passes the
 argument:
@@ skipping 19 matching lines @@
 # Add src/testing/ into sys.path for importing xvfb.
 sys.path.append(os.path.join(os.path.dirname(__file__), '..'))
 import xvfb
 
 
 def main():
   parser = argparse.ArgumentParser()
   parser.add_argument(
       '--isolated-script-test-output', type=argparse.FileType('w'),
       required=True)
-  parser.add_argument(
-    '--isolated-script-test-chartjson-output', type=argparse.FileType('w'),
-    required=False)
   parser.add_argument('--xvfb', help='Start xvfb.', action='store_true')
   args, rest_args = parser.parse_known_args()
+  # Remove the chartjson extra arg until this script cares about chartjson
+  # results from telemetry
+  index = 0
+  for arg in rest_args:
+    if '--isolated-script-test-chartjson-output' in arg:
+      rest_args.pop(index)
+      break
+    index += 1
 
   xvfb_proc = None
   openbox_proc = None
   xcompmgr_proc = None
   env = os.environ.copy()
   if args.xvfb and xvfb.should_start_xvfb(env):
     xvfb_proc, openbox_proc, xcompmgr_proc = xvfb.start_xvfb(env=env,
                                                              build_dir='.')
     assert xvfb_proc and openbox_proc and xcompmgr_proc, 'Failed to start xvfb'
   # Compatibility with gtest-based sharding.
@@ skipping 44 matching lines @@
 
 if __name__ == '__main__':
   # Conform minimally to the protocol defined by ScriptTest.
   if 'compile_targets' in sys.argv:
     funcs = {
       'run': None,
       'compile_targets': main_compile_targets,
     }
     sys.exit(common.run_script(sys.argv[1:], funcs))
   sys.exit(main())