Close Views constrained web dialog on interstitial WebUI

Close Views constrained web dialog on interstitial WebUI

Configure Views constrained web dialogs to be closed when interstital
WebUI is displayed (e.g. for SSL warnings prior to page load). Affects
these dialogs:

 * print preview
 * SSL certificate viewer (Chrome OS only)
 * profile sign-in confirmation dialog


BUG=240575
R=sky@chromium.org, thestig@chromium.org

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=221810

[Mike Wittman, 2013-09-05 21:22:59]

Scott and Lei, PTAL. This builds on https://codereview.chromium.org/23981002.

Lei: please review for the change in behavior to the print preview dialog. This
approach (closing only on interstitial WebUI rather than load start) seems to
avoid the problems of the previous implementation. I've tested prior bug
scenarios with the print preview dialog and it seems to work OK.

[Lei Zhang, 2013-09-05 21:39:08]

lgtm

The existing behavior is definitely wrong for print preview.

[sky, 2013-09-05 23:37:06]

LGTM

[Mike Wittman, 2013-09-06 23:16:09]

Committed patchset #1 manually as r221810 (presubmit successful).