Clovis: update resource sack to use new dependency graph.

tools/android/loading/test_utils.py

Index: tools/android/loading/test_utils.py
diff --git a/tools/android/loading/test_utils.py b/tools/android/loading/test_utils.py
index a221385a000835ee5e2e76a8a70e5e81983bf416..8e0782650b1613765b16e057175d11b750b5024a 100644
--- a/tools/android/loading/test_utils.py
+++ b/tools/android/loading/test_utils.py
@@ -4,6 +4,7 @@
 
 """Common utilities used in unit tests, within this directory."""
 
+import dependency_graph
 import devtools_monitor
 import loading_model
 import loading_trace
@@ -166,6 +167,13 @@ class TestResourceGraph(loading_model.ResourceGraph):
     return cls(LoadingTraceFromEvents(requests, page_events, trace_events))
 
 
+class TestDependencyGraph(dependency_graph.RequestDependencyGraph):
+  """A dependency graph created from requests using a simple lens."""
+  def __init__(self, requests):
+    lens = SimpleLens(LoadingTraceFromEvents(requests))
+    super(TestDependencyGraph, self).__init__(requests, lens)
+
+
 class MockConnection(object):
   """Mock out connection for testing.