Addding reference build results for DOM perf tests...

tools/buildbot/scripts/slave/chromium/dom_perf.py

Index: tools/buildbot/scripts/slave/chromium/dom_perf.py
===================================================================
--- tools/buildbot/scripts/slave/chromium/dom_perf.py	(revision 23577)
+++ tools/buildbot/scripts/slave/chromium/dom_perf.py	(working copy)
@@ -65,36 +65,54 @@
   if options.target == 'Debug':
     iterations = '&minIterations=1'
 
-  # Windows used to write to the root of C:, but that doesn't work
-  # on Vista so we write into the build folder instead.
-  output_file = os.path.join(build_dir, options.target,
-                             'dom_perf_result_%s.txt' % build_revision)
+  def run_and_print(use_refbuild):
+    # Windows used to write to the root of C:, but that doesn't work
+    # on Vista so we write into the build folder instead.
+    suffix = ''
+    if (use_refbuild):
+      suffix = '_ref'
+    output_file = os.path.join(build_dir, options.target,
+                               'dom_perf_result_%s%s.txt' % (build_revision,
+                                                             suffix))
 
-  url = URL % (dom_perf_dir, iterations, build_revision)
-  url_flag = '--url=%s' % url
+    url = URL % (dom_perf_dir, iterations, build_revision)
+    url_flag = '--url=%s' % url
 
-  command = [test_exe_path,
-             '--wait_cookie_name=__domperf_finished',
-             '--jsvar=__domperf_result',
-             '--jsvar_output=%s' % output_file,
-             url_flag]
+    command = [test_exe_path,
+               '--wait_cookie_name=__domperf_finished',
+               '--jsvar=__domperf_result',
+               '--jsvar_output=%s' % output_file,
+               url_flag]
+    if use_refbuild:
+      command.append('--reference_build')
 
-  print "Executing: "
-  print command
-  result = chromium_utils.RunCommand(command)
+    print "Executing: "
+    print command
+    result = chromium_utils.RunCommand(command)
 
-  # Open the resulting file and display it.
-  file = open(output_file, 'r')
-  data = json.loads(''.join(file.readlines()))
-  file.close()
+    # Open the resulting file and display it.
+    file = open(output_file, 'r')
+    data = json.loads(''.join(file.readlines()))
+    file.close()
 
+    name = 'Total'
+    if use_refbuild:
+      name += '_ref'
+    print_result(True, name, data['BenchmarkRun']['totalScore'])
+    for suite in data['BenchmarkSuites']:
+      name = suite['name']
+      if use_refbuild:
+        name += '_ref'
+      print_result(False, name, suite['score'])
+
+    return result
+
+  result = run_and_print(False)
+  result &= run_and_print(True)
+
   if chromium_utils.IsLinux():
     slave_utils.StopVirtualX(options.target)
 
-  print_result(True, 'Total', data['BenchmarkRun']['totalScore'])
-  for suite in data['BenchmarkSuites']:
-    print_result(False, suite['name'], suite['score'])
-
   return result