[XHR] Tidy up files for testing XHR's error for mixed content check failure

third_party/WebKit/LayoutTests/http/tests/security/mixedContent/insecure-async-post-xhr-blocked.html

Index: third_party/WebKit/LayoutTests/http/tests/security/mixedContent/insecure-async-post-xhr-blocked.html
diff --git a/third_party/WebKit/LayoutTests/http/tests/security/mixedContent/insecure-async-post-xhr-blocked.html b/third_party/WebKit/LayoutTests/http/tests/security/mixedContent/insecure-async-post-xhr-blocked.html
index f480e6f5eb3eade6602245da3e8f45fc3c3400c3..5831a801835cbf44ccbcc39f090b02c3a2ad5d70 100644
--- a/third_party/WebKit/LayoutTests/http/tests/security/mixedContent/insecure-async-post-xhr-blocked.html
+++ b/third_party/WebKit/LayoutTests/http/tests/security/mixedContent/insecure-async-post-xhr-blocked.html
@@ -3,14 +3,15 @@
 <script src="/js-test-resources/testharnessreport.js"></script>
 <script>
 if (window.testRunner) {
-    testRunner.overridePreference("WebKitAllowRunningInsecureContent", false);
+  testRunner.overridePreference("WebKitAllowRunningInsecureContent", false);
 }
 
-var test = async_test("Opens a HTTPS window that loads insecure data via XHR. We should trigger a mixed content callback and block the load.");
-
+var test = async_test("Opens an HTTPS window that loads insecure data via " +
+    "XHR. We should trigger a mixed content callback and block the load.");
 window.addEventListener("message", test.step_func(function (e) {
-    assert_equals(e.data, "DONE");
-    test.done();
+  assert_equals(e.data, "DONE");
+  test.done();
 }), false);
+
 window.open("https://127.0.0.1:8443/security/mixedContent/resources/frame-with-insecure-async-xhr-post.html");
 </script>