Use a global variable in the test to avoid flakiness in the Mac port.

Use a global variable in the test to avoid flakiness in the Mac port.

Apparently, runOnOpenPopup1() function was being called again after invoking
iframe.contentWindow.location.reload(), right between finishing the execution of
runOnIFrameLoad() and finishJSTest(), in the Mac platform.

This patch avoids the issue by using one global flag to early return in
that function when the iframe has already been reloaded.

BUG=357176
R=tkent@chromium.org,eae@chromium.org

Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=170226

[eae, 2014-03-27 16:45:30]

LGTM

[eae, 2014-03-27 16:45:32]

The CQ bit was checked by eae@chromium.org

[commit-bot: I haz the power, 2014-03-27 16:45:40]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/mario.prada@samsung.com/214603003/1

[commit-bot: I haz the power, 2014-03-27 17:11:13]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2014-03-27 17:11:13]

Try jobs failed on following builders:
  tryserver.blink on blink_presubmit

[tkent, 2014-03-27 22:44:56]

The CQ bit was checked by tkent@chromium.org

[commit-bot: I haz the power, 2014-03-27 22:45:02]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/mario.prada@samsung.com/214603003/1

[commit-bot: I haz the power, 2014-03-27 23:54:00]

Change committed as 170226