Implement the Chrome Proxy bypass integration test with ChromeDriver

tools/chrome_proxy/webdriver/bypass.py

+# Copyright 2017 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 common
+from common import TestDriver
+from common import IntegrationTest
+
+
+class Bypass(IntegrationTest):
+
+  # Ensure Chrome does not use Data Saver for block=0, which uses the default
+  # proxy retry delay.
+  def testBypass(self):
+    with TestDriver() as t:
+      t.AddChromeArg('--enable-spdy-proxy-auth')
+      t.LoadURL('http://check.googlezip.net/block/')
+      for response in t.GetHTTPResponses():
+        self.assertNotHasChromeProxyViaHeader(response)
+
+      # Load another page and check that Data Saver is not used.
+      t.LoadURL('http://check.googlezip.net/test.html')
+      for response in t.GetHTTPResponses():
+        self.assertNotHasChromeProxyViaHeader(response)
+
+if __name__ == '__main__':
+  IntegrationTest.RunAllTests()