adb_profile_chrome: Check in perf-to-tracing conversion script

tools/profile_chrome/perf_controller.py

 # Copyright 2014 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.
 
 import logging
 import os
+import signal
 import subprocess
 import sys
 import tempfile
 
 from profile_chrome import controllers
 from profile_chrome import ui
 
 from pylib import android_commands
 from pylib import constants
 from pylib.perf import perf_control
@@ skipping 146 matching lines @@
                                                     required_libs,
                                                     use_symlinks=False)
     perfhost_path = os.path.abspath(support_binaries.FindPath(
         'perfhost', 'linux'))
 
     ui.PrintMessage('\nNote: to view the profile in perf, run:')
     ui.PrintMessage('  ' + self._GetInteractivePerfCommand(perfhost_path,
         perf_profile, symfs_dir, required_libs, kallsyms))
 
     # Convert the perf profile into JSON.
-    perf_script_path = os.path.join(constants.DIR_SOURCE_ROOT,
-        'tools', 'telemetry', 'telemetry', 'core', 'platform', 'profiler',
-        'perf_vis', 'perf_to_tracing.py')
+    perf_script_path = os.path.join(os.path.dirname(os.path.abspath(__file__)),
+                                    'third_party', 'perf_to_tracing.py')
     json_file_name = os.path.basename(perf_profile)
     with open(os.devnull, 'w') as dev_null, \
         open(json_file_name, 'w') as json_file:
       cmd = [perfhost_path, 'script', '-s', perf_script_path, '-i',
              perf_profile, '--symfs', symfs_dir, '--kallsyms', kallsyms]
       if subprocess.call(cmd, stdout=json_file, stderr=dev_null):
         logging.warning('Perf data to JSON conversion failed. The result will '
                         'not contain any perf samples. You can still view the '
                         'perf data manually as shown above.')
         return None
 
     return json_file_name