Fix BTF check in Nano test. BUG=821208

Bug: 821208
Change-Id: I65b9b712262d5c457e98e19fddc29e4baa7391a1
Reviewed-on: https://chromium-review.googlesource.com/960927Reviewed-by: Ryan Sturm <ryansturm@chromium.org>
Commit-Queue: Prabhu Rajendran <prabhur@google.com>
Cr-Commit-Position: refs/heads/master@{#542907}

tools/chrome_proxy/webdriver/lite_page.py

@@ -9,6 +9,7 @@ from common import IntegrationTest
 from decorators import AndroidOnly
 from decorators import ChromeVersionBeforeM
 from decorators import ChromeVersionEqualOrAfterM
+from urlparse import urlparse
 
 import time
 
@@ -276,7 +277,8 @@ class LitePage(IntegrationTest):
           if (self.checkLitePageResponse(response)):
              lite_page_responses = lite_page_responses + 1
         # Keep track of BTF responses.
-        if response.url.startswith("http://googleweblight.com/b"):
+        u = urlparse(response.url)
+        if u.path == "/b":
           btf_response = btf_response + 1
         # Keep track of image responses.
         if response.url.startswith("data:image"):