Use benchmark_name (date-time) instead of revision number for telemetry html

tools/telemetry/telemetry/internal/results/html_output_formatter.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 datetime
 import json
 import logging
 import os
 import re
 
 from catapult_base import cloud_storage
 from telemetry.core import util
 from telemetry.internal.results import chart_json_output_formatter
 from telemetry.internal.results import output_formatter
 from telemetry import value as value_module
 
 util.AddDirToPythonPath(util.GetChromiumSrcDir(), 'build', 'util')
-import lastchange  # pylint: disable=F0401
 
 
 _TEMPLATE_HTML_PATH = os.path.join(
     util.GetTelemetryDir(), 'support', 'html_output', 'results-template.html')
 _JS_PLUGINS = [os.path.join('flot', 'jquery.flot.min.js'),
                os.path.join('WebKit', 'PerformanceTests', 'resources',
                             'jquery.tablesorter.min.js'),
                os.path.join('WebKit', 'PerformanceTests', 'resources',
                             'statistics.js')]
 _UNIT_JSON = ('tools', 'perf', 'unit-info.json')
 
 
+def _DatetimeInEs5CompatibleFormat(dt):
+  return dt.strftime('%Y-%m-%dT%H:%M:%S.%f')
+
+
+def _ShortDatetimeInEs5CompatibleFormat(dt):
+  return dt.strftime('%Y-%m-%d %H:%M:%S')
+
+
 # TODO(eakuefner): rewrite template to use Telemetry JSON directly
 class HtmlOutputFormatter(output_formatter.OutputFormatter):
   def __init__(self, output_stream, metadata, reset_results, upload_results,
       browser_type, results_label=None):
     super(HtmlOutputFormatter, self).__init__(output_stream)
     self._metadata = metadata
     self._reset_results = reset_results
     self._upload_results = upload_results
+    self._build_time = self._GetBuildTime()
     self._existing_results = self._ReadExistingResults(output_stream)
+    if results_label:
+      self._results_label = results_label
+    else:
+      self._results_label = '%s (%s)' % (
+          metadata.name, _ShortDatetimeInEs5CompatibleFormat(self._build_time))
     self._result = {
-        'buildTime': self._GetBuildTime(),
-        'revision': self._GetRevision(),
-        'label': results_label,
+        'buildTime': _DatetimeInEs5CompatibleFormat(self._build_time),
+        'label': self._results_label,
         'platform': browser_type,
         'tests': {}
         }
 
   def _GetBuildTime(self):
-    def _DatetimeInEs5CompatibleFormat(dt):
-      return dt.strftime('%Y-%m-%dT%H:%M:%S.%f')
-    return _DatetimeInEs5CompatibleFormat(datetime.datetime.utcnow())
-
-  def _GetRevision(self):
-    return lastchange.FetchVersionInfo(None).revision
+    return datetime.datetime.utcnow()
 
   def _GetHtmlTemplate(self):
     with open(_TEMPLATE_HTML_PATH) as f:
       return f.read()
 
   def _GetPlugins(self):
     plugins = ''
     for p in _JS_PLUGINS:
       with open(os.path.join(util.GetTelemetryThirdPartyDir(), p)) as f:
         plugins += f.read()
@@ skipping 96 matching lines @@
         print
         print ('View online at '
                'http://storage.googleapis.com/chromium-telemetry/%s'
                % file_name)
       except cloud_storage.PermissionError as e:
         logging.error('Cannot upload profiling files to cloud storage due to '
                       ' permission error: %s' % e.message)
     print
     print 'View result at file://%s' % os.path.abspath(
         self._output_stream.name)