tools/android/loading: Add support for multiple redirects.

tools/android/loading/loading_model_unittest.py

 # Copyright 2015 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 os
 import sys
 import unittest
 
 import dag
 import loading_model
@@ skipping 54 matching lines @@
   def SuccessorIndicies(self, node):
     return [c.Index() for c in node.SortedSuccessors()]
 
   def test_DictConstruction(self):
     graph = loading_model.ResourceGraph(
         {'request_track': {
             'events': [self.MakeParserRequest(0, 'null', 100, 101).ToJsonDict(),
                        self.MakeParserRequest(1, 0, 102, 103).ToJsonDict(),
                        self.MakeParserRequest(2, 0, 102, 103).ToJsonDict(),
                        self.MakeParserRequest(3, 2, 104, 105).ToJsonDict()],
-            'metadata': { 'duplicates_count' : 0 }},
+            'metadata': {
+                request_track.RequestTrack._DUPLICATES_KEY: 0,
+                request_track.RequestTrack._INCONSISTENT_INITIATORS_KEY: 0}},
          'url': 'foo.com',
          'tracing_track': {'events': []},
          'page_track': {'events': []},
          'metadata': {}})
     self.assertEqual(self.SuccessorIndicies(graph._nodes[0]), [1, 2])
     self.assertEqual(self.SuccessorIndicies(graph._nodes[1]), [])
     self.assertEqual(self.SuccessorIndicies(graph._nodes[2]), [3])
     self.assertEqual(self.SuccessorIndicies(graph._nodes[3]), [])
 
   def test_Costing(self):
@@ skipping 112 matching lines @@
 
     self.assertTrue(loading_model.ResourceGraph._IsAdUrl(
         'http://ums.adtechus.com/mapuser?providerid=1003;'
         'userid=RUmecco4z3o===='))
     self.assertTrue(loading_model.ResourceGraph._IsAdUrl(
         'http://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js'))
 
 
 if __name__ == '__main__':
   unittest.main()