Test data output fix for Telemetry & Android: remove more special chars.

These seemed to make the graph-plotter frontend not work.

BUG=NONE

Review URL: https://codereview.chromium.org/11779042

git-svn-id: http://src.chromium.org/svn/trunk/src/build@175525 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

android/pylib/perf_tests_helper.py

@@ -18,8 +18,7 @@ RESULT_TYPES = {'unimportant': 'RESULT ',
 
 def _EscapePerfResult(s):
   """Escapes |s| for use in a perf result."""
-  # Colons (:), equal signs (=) and slashes (/) are not allowed.
-  return re.sub('[\:|=/]', '_', s)
+  return re.sub('[\:|=/#&]', '_', s)
 
 
 def GeomMeanAndStdDevFromHistogram(histogram_json):