Show service worker navigation preload requests in DevTools Network tab

third_party/WebKit/LayoutTests/http/tests/inspector/service-workers/resources/navigation-preload-worker.php

Index: third_party/WebKit/LayoutTests/http/tests/inspector/service-workers/resources/navigation-preload-worker.php
diff --git a/third_party/WebKit/LayoutTests/http/tests/inspector/service-workers/resources/navigation-preload-worker.php b/third_party/WebKit/LayoutTests/http/tests/inspector/service-workers/resources/navigation-preload-worker.php
new file mode 100644
index 0000000000000000000000000000000000000000..dc5b3ccc061055dc05b41965d72dc57fbe08ab69
--- /dev/null
+++ b/third_party/WebKit/LayoutTests/http/tests/inspector/service-workers/resources/navigation-preload-worker.php
@@ -0,0 +1,26 @@
+<?php
+// generate_token.py  http://127.0.0.1:8000 ServiceWorkerNavigationPreload -expire-timestamp=2000000000
+header("Origin-Trial: AsAA4dg2Rm+GSgnpyxxnpVk1Bk8CcE+qVBTDpPbIFNscyNRJOdqw1l0vkC4dtsGm1tmP4ZDAKwycQDzsc9xr7gMAAABmeyJvcmlnaW4iOiAiaHR0cDovLzEyNy4wLjAuMTo4MDAwIiwgImZlYXR1cmUiOiAiU2VydmljZVdvcmtlck5hdmlnYXRpb25QcmVsb2FkIiwgImV4cGlyeSI6IDIwMDAwMDAwMDB9");
+header('Content-Type: application/javascript');
+?>
+
+self.addEventListener('activate', event => {
+  event.waitUntil(
+    registration.navigationPreload.enable()
+      .then(_ => registration.navigationPreload.setHeaderValue('hello')));
+});
+
+self.addEventListener('fetch', event => {
+  if (event.request.url.indexOf('EarlyReturn') != -1) {
+    return;
+  }
+  if (event.request.url.indexOf('RedirectError') != -1) {
+    event.respondWith(
+      event.preloadResponse
+        .then(_ => { return new Response('dummy'); }));
+    return;
+  }
+  if (event.preloadResponse) {
+    event.respondWith(event.preloadResponse);
+  }
+});

[falken, 2017/01/17 14:38:36]

nit: service worker JS style indents would indent lines 8-11 and 14-26 by two
spaces.

[horo, 2017/01/18 14:25:02]

Done.