Refactor ServiceWorker tests for inclusion in WPT

third_party/WebKit/LayoutTests/external/wpt/service-workers/service-worker/navigation-preload/resources/chunked-encoding-scope.py

Index: third_party/WebKit/LayoutTests/external/wpt/service-workers/service-worker/navigation-preload/resources/chunked-encoding-scope.py
diff --git a/third_party/WebKit/LayoutTests/external/wpt/service-workers/service-worker/navigation-preload/resources/chunked-encoding-scope.py b/third_party/WebKit/LayoutTests/external/wpt/service-workers/service-worker/navigation-preload/resources/chunked-encoding-scope.py
new file mode 100644
index 0000000000000000000000000000000000000000..c0a5ddce0b18d835a185ac8704c6ad618f3e7f12
--- /dev/null
+++ b/third_party/WebKit/LayoutTests/external/wpt/service-workers/service-worker/navigation-preload/resources/chunked-encoding-scope.py
@@ -0,0 +1,17 @@
+import time
+
+def main(request, response):
+    body = "hello\nworld\n\n"
+
+    response.add_required_headers = False
+    response.writer.write_status(200)
+    response.writer.write_header("Content-type", "text/html; charset=UTF-8")
+    response.writer.write_header("Transfer-encoding", "chunked")
+    response.writer.end_headers()
+
+    for idx in range(10):
+        response.writer.write("%s\r\n%s\r\n" % (len(str(idx)), idx))
+        response.writer.flush()
+        time.sleep(0.001)
+
+    response.writer.write("0\r\n\r\n")