Made e2e audio quality test write its results to perf.

The https://chromereviews.googleplex.com/5573026/ patch will mark the test step as perf-printing - this cl will make the test actually print perf lines.

TEST=Ran locally.

Review URL: https://webrtc-codereview.appspot.com/933036

git-svn-id: http://webrtc.googlecode.com/svn/trunk@3252 4adac7df-926f-26a2-2b94-8c16560cd09d

tools/e2e_quality/audio/perf

@@ -0,0 +1 @@
+../../perf

tools/e2e_quality/audio/run_audio_test.py

@@ -26,6 +26,8 @@ import sys
 import threading
 import time
 
+import perf.perf_utils
+
 def main(argv):
   parser = optparse.OptionParser()
   usage = 'Usage: %prog [options]'
@@ -117,7 +119,12 @@ def main(argv):
       return proc.returncode
 
     # The list should only contain one item.
-    print ''.join(re.findall(options.regexp, output))
+    value = ''.join(re.findall(options.regexp, output))
+
+    perf.perf_utils.PrintPerfResult(graph_name='audio_e2e_score',
+                                    series_name='e2e score',
+                                    data_point=value,
+                                    units='MOS')  # Assuming we run PESQ.
 
   return 0
 

tools/perf/perf

@@ -0,0 +1 @@
+../../perf

tools/perf/perf_utils.py

@@ -0,0 +1,31 @@
+# Copyright (c) 2012 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.
+
+# Copied from /src/chrome/test/pyautolib/pyauto_utils.py in Chromium.
+
+import sys
+
+def PrintPerfResult(graph_name, series_name, data_point, units,
+                    show_on_waterfall=False):
+  """Prints a line to stdout that is specially formatted for the perf bots.
+
+  Args:
+    graph_name: String name for the graph on which to plot the data.
+    series_name: String name for the series (line on the graph) associated with
+                 the data.  This is also the string displayed on the waterfall
+                 if |show_on_waterfall| is True.
+    data_point: Numeric data value to plot on the graph for the current build.
+                This can be a single value or an array of values.  If an array,
+                the graph will plot the average of the values, along with error
+                bars.
+    units: The string unit of measurement for the given |data_point|.
+    show_on_waterfall: Whether or not to display this result directly on the
+                       buildbot waterfall itself (in the buildbot step running
+                       this test on the waterfall page, not the stdio page).
+  """
+  waterfall_indicator = ['', '*'][show_on_waterfall]
+  print '%sRESULT %s: %s= %s %s' % (
+      waterfall_indicator, graph_name, series_name,
+      str(data_point).replace(' ', ''), units)
+  sys.stdout.flush()