Move top_20 tests to a separate suite

tools/chrome_proxy/live_tests/network_metrics.py

 # Copyright 2014 The Chromium Authors. All rights reserved.

[sclittle, 2015/04/24 18:55:22]

Could this file be shared instead of duplicated? Maybe in a lib directory or
something like you were describing before.

[bustamante, 2015/04/29 20:28:03]

Yes, Done.

 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import base64
 import gzip
 import hashlib
 import io
 import logging
 import zlib
 
@@ skipping 186 matching lines @@
     if self.compute_data_saving:
       if (original_content_length > 0 and
           original_content_length >= content_length):
         saving = (float(original_content_length-content_length) * 100 /
                   original_content_length)
         results.AddValue(scalar.ScalarValue(
             results.current_page, 'data_saving', 'percent', saving))
       else:
         results.AddValue(scalar.ScalarValue(
             results.current_page, 'data_saving', 'percent', 0.0))