Adding two smoke tests for DataSaver:

tools/chrome_proxy/webdriver/smoke.py

Index: tools/chrome_proxy/webdriver/smoke.py
diff --git a/tools/chrome_proxy/webdriver/smoke.py b/tools/chrome_proxy/webdriver/smoke.py
index 49f0130659f4537a9c4631b4243fea679cb79b06..3f9dcd0acd3565735fe9a743fc71ae63211cbf13 100644
--- a/tools/chrome_proxy/webdriver/smoke.py
+++ b/tools/chrome_proxy/webdriver/smoke.py
@@ -93,5 +93,27 @@ class Smoke(IntegrationTest):
         self.assertHasChromeProxyViaHeader(response)
         self.assertEqual(200, response.status)
 
+  # Ensure the block is working

[RyanSturm, 2017/03/21 17:41:53]

nit: change the comment to "Ensure that block causes resources to load from the
origin directly."

+  def testCheckBlockIsWorking(self):
+    with TestDriver() as t:
+      t.AddChromeArg('--enable-spdy-proxy-auth')
+      t.LoadURL('http://check.googlezip.net/block')
+      responses = t.GetHTTPResponses()
+      self.assertNotEqual(0, len(responses))
+      for response in responses:
+        self.assertNotHasChromeProxyViaHeader(response)
+
+  # Ensure image/css/javascript is compressed

[RyanSturm, 2017/03/21 17:41:53]

nit: Change the comment to "Ensure image, css, and javascript resources are
compressed."

+  def testCheckImageCssJavascriptIsCompressed(self):
+    with TestDriver() as t:
+      t.AddChromeArg('--enable-spdy-proxy-auth')
+      t.LoadURL('http://check.googlezip.net/static')
+      # http://check.googlezip.net/static is a test page that has
+      # image/css/javascript resources.
+      responses = t.GetHTTPResponses()
+      self.assertNotEqual(0, len(responses))
+      for response in responses:
+        self.assertHasChromeProxyViaHeader(response)        
+
 if __name__ == '__main__':
   IntegrationTest.RunAllTests()