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

Review URL: https://codereview.chromium.org/23819028

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@221810 0039d316-1c4b-4281-b951-d872f2087c98

chrome/browser/ui/views/constrained_web_dialog_delegate_views.cc

@@ -235,6 +235,8 @@ ConstrainedWebDialogDelegate* CreateConstrainedWebDialog(
       web_contents->GetView()->GetNativeView(),
       modal_delegate->GetWebContentsModalDialogHost()->GetHostView());
   web_contents_modal_dialog_manager->ShowDialog(window->GetNativeView());
+  web_contents_modal_dialog_manager->SetCloseOnInterstitialWebUI(
+      window->GetNativeView(), true);
   constrained_delegate->SetWindow(window);
   return constrained_delegate;
 }