Fix name/path separator for telemetry_unittests test names (src-side)

testing/scripts/common.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 argparse
 import contextlib
 import json
 import os
 import subprocess
 import tempfile
@@ skipping 47 matching lines @@
 @contextlib.contextmanager
 def temporary_file():
   fd, path = tempfile.mkstemp()
   os.close(fd)
   try:
     yield path
   finally:
     os.remove(path)
 
 
-def parse_common_test_results(json_results):
+def parse_common_test_results(json_results, test_separator='/'):
   def convert_trie_to_flat_paths(trie, prefix=None):
     # Also see webkitpy.layout_tests.layout_package.json_results_generator
     result = {}
     for name, data in trie.iteritems():
       if prefix:
-        name = prefix + '/' + name
+        name = prefix + test_separator + name
       if len(data) and not 'actual' in data and not 'expected' in data:
         result.update(convert_trie_to_flat_paths(data, name))
       else:
         result[name] = data
     return result
 
   results = {
     'passes': {},
     'unexpected_passes': {},
     'failures': {},
@@ skipping 23 matching lines @@
       key += 'passes'
       # TODO(dpranke): crbug.com/357867 ...  Why are we assigning result
       # instead of actual_result here. Do we even need these things to be
       # hashes, or just lists?
       data = result
     else:
       key += 'failures'
     results[key][test] = data
 
   return results