Blur immediately if an attribute change made an element unfocasable.

third_party/WebKit/LayoutTests/fast/dom/HTMLAnchorElement/remove-href-from-focused-anchor.html

Index: third_party/WebKit/LayoutTests/fast/dom/HTMLAnchorElement/remove-href-from-focused-anchor.html
diff --git a/third_party/WebKit/LayoutTests/fast/dom/HTMLAnchorElement/remove-href-from-focused-anchor.html b/third_party/WebKit/LayoutTests/fast/dom/HTMLAnchorElement/remove-href-from-focused-anchor.html
index d39e652ea1cc1e400d6edd8301d4c6a74bc3bf9f..c2b2c9892beae1166a546f4a3b32119b1dbd5bca 100644
--- a/third_party/WebKit/LayoutTests/fast/dom/HTMLAnchorElement/remove-href-from-focused-anchor.html
+++ b/third_party/WebKit/LayoutTests/fast/dom/HTMLAnchorElement/remove-href-from-focused-anchor.html
@@ -9,19 +9,10 @@ target.focus();
 shouldBe('document.activeElement', 'target');
 debug('Remove href.');
 window.onload = function() {
-    target.addEventListener('blur', function() {
-        testPassed('blur event was disaptched.');
-        target.remove();
-        finishJSTest();
-    }, false);
-    // Need to wait until CheckFocusedElementTask is unqueued.
-    setTimeout(function() {
-        target.removeAttribute('href');
-    }, 10);
-    setTimeout(function() {
-        testFailed('No blur event');
-        finishJSTest();
-    }, 2000);
+    target.removeAttribute('href');
+    shouldBe('document.activeElement', 'document.body');
+    target.remove();
+    finishJSTest();
 };
 </script>
 </body>