Update the host URLs in WPR archives used by map test

content/test/gpu/gpu_tests/maps.py

Index: content/test/gpu/gpu_tests/maps.py
diff --git a/content/test/gpu/gpu_tests/maps.py b/content/test/gpu/gpu_tests/maps.py
index c3fbaee011528b10e0f0c781a2a45857515eb1fc..bb6f41c55e1a2213a9b0710abb688f265ffd4d51 100644
--- a/content/test/gpu/gpu_tests/maps.py
+++ b/content/test/gpu/gpu_tests/maps.py
@@ -89,7 +89,7 @@ class MapsValidator(cloud_storage_test_base.ValidatorBase):
 class MapsPage(gpu_test_base.PageBase):
   def __init__(self, story_set, base_dir, expectations):
     super(MapsPage, self).__init__(
-        url='http://localhost:8000/performance.html',
+        url='http://map-test/performance.html',
         page_set=story_set,
         base_dir=base_dir,
         name='Maps.maps_004',