Adding perf test isolate and gn build target for swarming the benchmarks.

testing/scripts/run_telemetry_benchmark_as_googletest.py

Index: testing/scripts/run_telemetry_benchmark_as_googletest.py
diff --git a/testing/scripts/run_telemetry_benchmark_as_googletest.py b/testing/scripts/run_telemetry_benchmark_as_googletest.py
index 387c5c8da95993f984f20522253b471eca93a58d..dcf2e72239d7acce4118f85aa949283b2d94e786 100755
--- a/testing/scripts/run_telemetry_benchmark_as_googletest.py
+++ b/testing/scripts/run_telemetry_benchmark_as_googletest.py
@@ -18,7 +18,7 @@ This script is intended to be the base command invoked by the isolate,
 followed by a subsequent Python script. It could be generalized to
 invoke an arbitrary executable.
 """
-
+import logging
 import argparse
 import json
 import os
@@ -40,12 +40,14 @@ CHROME_SANDBOX_ENV = 'CHROME_DEVEL_SANDBOX'
 CHROME_SANDBOX_PATH = '/opt/chromium/chrome_sandbox'
 
 def main():
+  logging.info("1: IN THE SCRIPT")

[dtu, 2016/09/01 05:18:38]

Are these intentional?

[eyaich1, 2016/09/01 14:19:35]

lol definitely not.  this file sholdn't be included at all, was just for
debugging one of the tasks.  Removed.

   parser = argparse.ArgumentParser()
   parser.add_argument(
       '--isolated-script-test-output', type=argparse.FileType('w'),
       required=True)
   parser.add_argument('--xvfb', help='Start xvfb.', action='store_true')
   args, rest_args = parser.parse_known_args()
+  logging.info("2: PARSED ARGS")
   xvfb_proc = None
   openbox_proc = None
   xcompmgr_proc = None
@@ -58,18 +60,22 @@ def main():
     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'
+  logging.info("3: ABOUT TO TRY")
   try:
     tempfile_dir = tempfile.mkdtemp('telemetry')
     valid = True
     failures = []
     try:
+      logging.info("4: TRY AGAIN")
       rc = common.run_command([sys.executable] + rest_args + [
         '--output-dir', tempfile_dir,
         '--output-format=json'
       ], env=env)
+      logging.info("5: AFTER COMMAND")
       tempfile_name = os.path.join(tempfile_dir, 'results.json')
       with open(tempfile_name) as f:
         results = json.load(f)
+      logging.info("6: ABOUT TO WRITE RESULTS")
       for value in results['per_page_values']:
         if value['type'] == 'failure':
           failures.append(results['pages'][str(value['page_id'])]['name'])
@@ -85,6 +91,7 @@ def main():
       if rc == 0:
         rc = 1  # Signal an abnormal exit.
 
+    logging.info("7: ABOUT TO DUMP")
     json.dump({
         'valid': valid,
         'failures': failures,