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: svn://svn.chromium.org/chrome/trunk/src@175525 0039d316-1c4b-4281-b951-d872f2087c98

build/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):