Support data URLs in worker constructors

third_party/WebKit/LayoutTests/external/wpt/workers/data-url-shared.html

Index: third_party/WebKit/LayoutTests/external/wpt/workers/data-url-shared.html
diff --git a/third_party/WebKit/LayoutTests/external/wpt/workers/data-url-shared.html b/third_party/WebKit/LayoutTests/external/wpt/workers/data-url-shared.html
index 64aacf26527887a5147276c343dbe06657af45da..05d3b5138b99d7949d04b088ef42b61e741d89d4 100644
--- a/third_party/WebKit/LayoutTests/external/wpt/workers/data-url-shared.html
+++ b/third_party/WebKit/LayoutTests/external/wpt/workers/data-url-shared.html
@@ -4,10 +4,33 @@
 <script src="/resources/testharnessreport.js"></script>
 <div id=log></div>
 <script>
-async_test(t => {
-  var worker = new SharedWorker("data:,onconnect = (e) => { fetch('/').then(() => e.ports[0].postMessage('fail'), () => e.ports[0].postMessage('pass')) }") // not same-origin
-  worker.port.onmessage = t.step_func_done(e => {
-    assert_equals(e.data, "pass")
-  })
-})
+function assert_worker_sends_pass(test_desc, mime_type, worker_code) {
+  async_test(function(t) {
+    var w = new SharedWorker(`data:${mime_type},onconnect = function(e) { port = e.ports[0]; ${worker_code}}`);
+    w.port.onmessage = t.step_func_done(function(e) {
+      assert_equals(e.data, 'PASS');
+    });
+    w.port.postMessage('SEND_PASS');
+  }, test_desc);
+}
+
+function assert_worker_throws(test_desc, worker_code, before_connect_worker_code) {
+  assert_worker_sends_pass(test_desc, '', `try { ${worker_code}; port.postMessage("FAIL"); } catch (e) { port.postMessage("PASS"); }`, before_connect_worker_code);
+}
+
+// Any MIME type allowed
+assert_worker_sends_pass('application/javascript MIME allowed', 'application/javascript', 'port.postMessage("PASS")');
+assert_worker_sends_pass('text/plain MIME allowed', 'text/plain', 'port.postMessage("PASS")');
+assert_worker_sends_pass('empty MIME allowed', '', 'port.postMessage("PASS")');
+
+// Communications goes both ways
+assert_worker_sends_pass('communication goes both ways', 'application/javascript', 'port.onmessage = function(e) { port.postMessage("PASS"); }');
+
+// 'data:' workers are cross-origin
+assert_worker_throws('indexedDB inaccessible', 'self.indexedDB.open("someDBName")');
+assert_worker_throws('localStorage inaccessible', 'self.localStorage.testItem');
+assert_worker_sends_pass('cross-origin worker', '', 'fetch("/").then(() => port.postMessage("FAIL"), () => port.postMessage("PASS"))');
+
+// 'data:' workers have opaque origin
+assert_worker_sends_pass('worker has opaque origin', 'application/javascript', 'if (self.location.origin == "null") port.postMessage("PASS"); else port.postMessage("FAIL");');
 </script>