The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/91ff5a8662a658007afd53608db8f965bb2b03d7

commit 91ff5a8662a658007afd53608db8f965bb2b03d7
Author: warx <warx@chromium.org>
Date: Fri Oct 21 20:35:12 2016

Refactor BrowserActivationWaiter as test support and move PopupBlockerBrowserTest to interactive_uitest

(1) Making BrowserActivationWaiter a common test support
(2) move PopupBlockerBrowserTest to interactive_uitest as there exists one test that is relying on native widget activation.

BUG= 658295 
TEST=utilizing the test support in PopupBlockerBrowserTest

Review-Url: https://chromiumcodereview.appspot.com/2441543004
Cr-Commit-Position: refs/heads/master@{#426878}

[modify] https://crrev.com/91ff5a8662a658007afd53608db8f965bb2b03d7/chrome/browser/ui/blocked_content/popup_blocker_browsertest.cc
[modify] https://crrev.com/91ff5a8662a658007afd53608db8f965bb2b03d7/chrome/test/BUILD.gn
[modify] https://crrev.com/91ff5a8662a658007afd53608db8f965bb2b03d7/chrome/test/base/ui_test_utils.cc
[modify] https://crrev.com/91ff5a8662a658007afd53608db8f965bb2b03d7/chrome/test/base/ui_test_utils.h