Update network to use results.AddValue(...)

tools/perf/metrics/network.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 base64
 import gzip
 import hashlib
 import io
 import logging
 import zlib
@@ skipping 162 matching lines @@
               'resource_data_saving_' + resource_signature, 'percent',
               resp.data_saving_rate * 100))
           results.AddValue(scalar.ScalarValue(
               results.current_page,
               'resource_original_content_length_' + resource_signature, 'bytes',
               ocl))
         original_content_length += ocl
       else:
         original_content_length += cl
       if self.add_result_for_resource:
-        results.Add(
-            'resource_content_length_' + resource_signature, 'bytes', cl)
+        results.AddValue(scalar.ScalarValue(
+            results.current_page,
+            'resource_content_length_' + resource_signature, 'bytes', cl))
       content_length += cl
 
     results.AddValue(scalar.ScalarValue(
         results.current_page, 'content_length', 'bytes', content_length))
     results.AddValue(scalar.ScalarValue(
         results.current_page, 'original_content_length', 'bytes',
         original_content_length))
     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))