Revert of Add browser tests for FetchEvent.request.mode/credentials in the service worker

chrome/test/data/nacl/pnacl_url_loader/pnacl_url_loader.html

Index: chrome/test/data/nacl/pnacl_url_loader/pnacl_url_loader.html
diff --git a/chrome/test/data/nacl/pnacl_url_loader/pnacl_url_loader.html b/chrome/test/data/nacl/pnacl_url_loader/pnacl_url_loader.html
deleted file mode 100644
index 6f186ec4779b6f0faed90d81405e8bc000ed231b..0000000000000000000000000000000000000000
--- a/chrome/test/data/nacl/pnacl_url_loader/pnacl_url_loader.html
+++ /dev/null
@@ -1,19 +0,0 @@
-<script>
-window.addEventListener('load', function() {
-    init();
-  }, false);
-
-function init() {
-  var embed = document.createElement('embed');
-  embed.addEventListener('message', function(message) {
-      window.domAutomationController.setAutomationId(0);
-      window.domAutomationController.send(message.data);
-    }, false);
-  embed.addEventListener('load', function() {
-      embed.postMessage(location.hash.substr(1));
-    }, false);
-  embed.src = 'pnacl_url_loader.nmf';
-  embed.type = 'application/x-pnacl';
-  document.body.appendChild(embed);
-}
-</script>