Add support to Perf tryjobs to read test attributes from buildbot properties.

scripts/slave/recipe_modules/perf_try/api.py

 # 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.
 
 """API for the perf try job recipe module.
 
 This API is meant to enable the perf try job recipe on any chromium-supported
 platform for any test that can be run via buildbot, perf or otherwise.
 """
 
@@ skipping 24 matching lines @@
 Standard Error: +- %(std_err).05f delta
 
 %(results)s
 """
 
 class PerfTryJobApi(recipe_api.RecipeApi):
 
   def __init__(self, *args, **kwargs):
     super(PerfTryJobApi, self).__init__(*args, **kwargs)
 
-  def start_perf_try_job(self, affected_files, bot_update_step, bot_db):
+  def start_perf_try_job(self, api, affected_files, bot_update_step, bot_db):
     """Entry point pert tryjob or CQ tryjob."""
-    perf_config = self._get_perf_config(affected_files)
+    perf_config = self._get_perf_config(api, affected_files)
     if perf_config:
       self._run_perf_job(perf_config, bot_update_step, bot_db)
     elif (not perf_config and
           self.m.properties.get('requester') == 'commit-bot@chromium.org'):
       self.run_cq_job(bot_update_step, bot_db, affected_files)
     else:
       self.m.halt('Could not load config file. Double check your changes to '
                   'config files for syntax errors.')
 
   def _run_perf_job(self, perf_cfg, bot_update_step, bot_db):
@@ skipping 163 matching lines @@
     step_result = self.m.python(
         name,
         self.resource('load_config_to_json.py'),
         ['--source', src_path, '--output_json', self.m.json.output()],
         **kwargs)
     if not step_result.json.output:  # pragma: no cover
       raise self.m.step.StepFailure('Loading config file failed. [%s]' %
                                     src_path)
     return step_result.json.output
 
-  def _get_perf_config(self, affected_files):
+  def _get_perf_config(self, api, affected_files):
     """Checks affected config file and loads the config params to a dict."""
     perf_cfg_files = [PERF_CONFIG_FILE, WEBKIT_PERF_CONFIG_FILE]
     cfg_file = [f for f in perf_cfg_files if str(f) in affected_files]
-    if not cfg_file:  # pragma: no cover
+    if cfg_file:  # pragma: no cover
+      # Try reading any possible perf test config files.
+      cfg_content = self._load_config_file(
+          'load config', self.m.path['checkout'].join(cfg_file[0]))
+    elif api.properties.get('perf_try_config'):  # pragma: no cover
+      cfg_content = dict(api.m.properties.get('perf_try_config'))
+    else:
       return None
-    # Try reading any possible perf test config files.
-    cfg_content = self._load_config_file(
-        'load config', self.m.path['checkout'].join(cfg_file[0]))
+
     cfg_is_valid = _validate_perf_config(
         cfg_content, required_parameters=['command'])
     if cfg_content and cfg_is_valid:
       return cfg_content
 
     return None
 
   def _get_hash(self, rev):
     """Returns git hash for the given commit position."""
     def _check_if_hash(s):  # pragma: no cover
@@ skipping 252 matching lines @@
 
 def _prepend_src_to_path_in_command(test_cfg):
   command_to_run = []
   for v in test_cfg.get('command').split():
     if v in ['./tools/perf/run_benchmark',
              'tools/perf/run_benchmark',
              'tools\\perf\\run_benchmark']:
       v = 'src/tools/perf/run_benchmark'
     command_to_run.append(v)
   test_cfg.update({'command': ' '.join(command_to_run)})