Plumb iteration info

tools/perf/core/perf_benchmark.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.
 
 import os
 import sys
 
 from telemetry import benchmark
 from telemetry.internal.browser import browser_finder
 
 sys.path.append(os.path.join(os.path.dirname(__file__), '..',
                              '..', 'variations'))
 import fieldtrial_util  # pylint: disable=import-error
 
 
 class PerfBenchmark(benchmark.Benchmark):
   """ Super class for all benchmarks in src/tools/perf/benchmarks directory.
   All the perf benchmarks must subclass from this one to to make sure that
   the field trial configs are activated for the browser during benchmark runs.
   For more info, see: https://goo.gl/4uvaVM
   """
 
   def SetExtraBrowserOptions(self, options):
     """ To be overridden by perf benchmarks. """
     pass
 
+  def GetExtraIterationInfo(self):
+    info = super(PerfBenchmark, self).GetExtraIterationInfo()
+
+    botName = os.environ.get('BUILDBOT_BUILDERNAME')
+    if botName:
+      info['botName'] = botName
+
+    buildNumber = os.environ.get('BUILDBOT_BUILDNUMBER')
+    if buildNumber:
+      info['buildNumber'] = buildNumber
+
+    revision = os.environ.get('BUILDBOT_REVISION')
+    if revision:
+      info['revision'] = revision
+
+    return info
+
   def CustomizeBrowserOptions(self, options):
     # Subclass of PerfBenchmark should override  SetExtraBrowserOptions to add
     # more browser options rather than overriding CustomizeBrowserOptions.
     super(PerfBenchmark, self).CustomizeBrowserOptions(options)
 
     # Enable taking screen shot on failed pages for all perf benchmarks.
     options.take_screenshot_for_failed_page = True
 
     # The current field trial config is used for an older build in the case of
     # reference. This is a problem because we are then subjecting older builds
@@ skipping 25 matching lines @@
         os.path.join(variations_dir,
                      'fieldtrial_testing_config_%s.json' % self._FixupTargetOS(
                          possible_browser.target_os)))
 
   @staticmethod
   def IsSvelte(possible_browser):
     """Returns whether a possible_browser is on a svelte Android build."""
     if possible_browser.target_os == 'android':
       return possible_browser.platform.IsSvelte()
     return False