Remove display() from more layout tests

LayoutTests/fast/animation/request-animation-frame-during-modal.html

Index: LayoutTests/fast/animation/request-animation-frame-during-modal.html
diff --git a/LayoutTests/fast/animation/request-animation-frame-during-modal.html b/LayoutTests/fast/animation/request-animation-frame-during-modal.html
index 2181bb94d528b47612c73c0844ab98a7bd0bc0e5..cc372d62dc33ab40e19d1d6a8036e2528f520db4 100644
--- a/LayoutTests/fast/animation/request-animation-frame-during-modal.html
+++ b/LayoutTests/fast/animation/request-animation-frame-during-modal.html
@@ -14,17 +14,9 @@ onload = function()
     debug('Setting callback');
     window.requestAnimationFrame(function() { debug('Callback fired'); }, document.body);
     debug('Showing modal dialog');
-    var src = 'if (window.testRunner) {' +
-              '    testRunner.display();' +
-              '    window.close();' +
-              '} else {'+
-              '    window.setTimeout(window.close, 10);'+
-              '}';
+    var src = 'window.setTimeout(window.close, 100);';

[ojan, 2014/03/27 20:31:49]

Why 100ms? This seems fragile and likely to be flaky.

Maybe we don't care since we're getting rid of showModalDialog in a couple
weeks?

[enne (OOO), 2014/03/27 20:51:05]

Yeah, it's a magic number.  Since raf can't be invoked while in a modal dialog,
I can't use raf and have to fall back on setTimeout.

This test is trying to make sure that raf is not invoked while a modal dialog is
up.  raf should almost certianly run within 100ms, so it seemed like a
reasonable period of time to wait.

Do you have a better suggestion?

[ojan, 2014/03/27 21:58:45]

Can you requestAnimationFrame inside the showModalDialog? I guess that doesn't
guarantee that we would have tried to put up a frame in the parent page.

Meh. Not worth worrying about.

[enne (OOO), 2014/03/27 22:03:05]

There's a rAF right before it.  Since showModalDialog is synchronous, then
that's equivalent to it being inside, I think.
Yeah, my thought exactly.

     showModalDialog('data:text/html,<script>' + src + '</' + 'script>');
     debug('Returned from modal dialog');
-    if (window.testRunner) {;
-        testRunner.display();
-    }
 
     window.requestAnimationFrame(function() {
         isSuccessfullyParsed();