[telemetry] Move telemetry/core/chrome/ to telemetry/core/backends/chrome/

tools/telemetry/telemetry/core/extension_unittest.py

Index: tools/telemetry/telemetry/core/extension_unittest.py
diff --git a/tools/telemetry/telemetry/core/extension_unittest.py b/tools/telemetry/telemetry/core/extension_unittest.py
index 986139eda01be0718cde1298c2e608f8e24b9eac..b15fd9988440bd7ff1ce10871101b0b23d20d1c1 100644
--- a/tools/telemetry/telemetry/core/extension_unittest.py
+++ b/tools/telemetry/telemetry/core/extension_unittest.py
@@ -1,6 +1,7 @@
 # Copyright (c) 2012 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 logging
 import os
 import shutil
@@ -10,9 +11,10 @@ import unittest
 from telemetry.core import browser_finder
 from telemetry.core import extension_to_load
 from telemetry.core import util
-from telemetry.core.chrome import extension_dict_backend
+from telemetry.core.backends.chrome import extension_dict_backend
 from telemetry.unittest import options_for_unittests
 
+
 class ExtensionTest(unittest.TestCase):
   def setUp(self):
     extension_path = os.path.join(util.GetUnittestDataDir(), 'simple_extension')
@@ -126,6 +128,7 @@ class MultipleExtensionTest(unittest.TestCase):
       extension.ExecuteJavaScript('setTestVar("abcdef")')
       self.assertEquals('abcdef', extension.EvaluateJavaScript('_testVar'))
 
+
 class ComponentExtensionTest(unittest.TestCase):
   def testComponentExtensionBasic(self):
     extension_path = os.path.join(