[ServiceWorker] Treat cors response as a network error for client requests.

LayoutTests/http/tests/serviceworker/fetch-frame-resource.html

Index: LayoutTests/http/tests/serviceworker/fetch-frame-resource.html
diff --git a/LayoutTests/http/tests/serviceworker/fetch-frame-resource.html b/LayoutTests/http/tests/serviceworker/fetch-frame-resource.html
index caec13af4bbccbdcdbd51fb563e58219f4ecfb1a..4de0f2f7223b945fc6c514736ffb679b61157ff2 100644
--- a/LayoutTests/http/tests/serviceworker/fetch-frame-resource.html
+++ b/LayoutTests/http/tests/serviceworker/fetch-frame-resource.html
@@ -42,21 +42,27 @@ async_test(function(t) {
           return wait_for_state(t, reg.installing, 'activated');
         })
       .then(function() {
-          return with_iframe(
+          var frame = document.createElement('iframe');
+          frame.src =
             scope + '?mode=cors&url=' +
             encodeURIComponent(host_info['HTTP_REMOTE_ORIGIN'] + path +
-                               '?ACAOrigin=' + host_info['HTTP_ORIGIN']));
+                               '?ACAOrigin=' + host_info['HTTP_ORIGIN']);
+          document.body.appendChild(frame);
+          // We can't catch the network error on iframe. So we use the timer.
+          return new Promise(function(resolve) {
+              setTimeout(function() { resolve(frame); }, 1000);
+            });
         })
       .then(function(frame) {
-          assert_not_equals(
+          assert_equals(
             frame.contentDocument.body.textContent,
             '',
-            'CORS type response could be loaded in the iframe.');
+            'CORS type response could not be loaded in the iframe.');
           frame.remove();
           return service_worker_unregister_and_done(t, scope);
         })
       .catch(unreached_rejection(t));
-  }, 'CORS type response could be loaded in the iframe.');
+  }, 'CORS type response could not be loaded in the iframe.');
 
 async_test(function(t) {
     var scope = 'resources/fetch-frame-resource/frame-opaque';
@@ -118,24 +124,25 @@ async_test(function(t) {
           return wait_for_state(t, reg.installing, 'activated');
         })
       .then(function() {
+          var win = window.open(
+            scope + '?mode=cors&url=' +
+            encodeURIComponent(host_info['HTTP_REMOTE_ORIGIN'] + path +
+                               '?ACAOrigin=' + host_info['HTTP_ORIGIN']));
+          // We can't catch the network error on window. So we use the timer.
           return new Promise(function(resolve) {
-              var win = window.open(
-                scope + '?mode=cors&url=' +
-                encodeURIComponent(host_info['HTTP_REMOTE_ORIGIN'] + path +
-                                   '?ACAOrigin=' + host_info['HTTP_ORIGIN']));
-              win.onload = function() { resolve(win); };
+              setTimeout(function() { resolve(win); }, 1000);
             });
         })
       .then(function(win) {
-          assert_not_equals(
+          assert_equals(
             win.document.body.textContent,
             '',
-            'CORS type response could be loaded in the new window.');
+            'CORS type response could not be loaded in the new window.');
           win.close();
           return service_worker_unregister_and_done(t, scope);
         })
       .catch(unreached_rejection(t));
-  }, 'CORS type response could be loaded in the new window.');
+  }, 'CORS type response could not be loaded in the new window.');
 
 async_test(function(t) {
     var scope = 'resources/fetch-frame-resource/window-opaque';
@@ -156,7 +163,7 @@ async_test(function(t) {
           assert_equals(
             win.document.body.textContent,
             '',
-            'CORS type response could not be loaded in the new window.');
+            'Opaque type response could not be loaded in the new window.');
           win.close();
           return service_worker_unregister_and_done(t, scope);
         })