Allow cert-popup for WebView guests.

chrome/browser/ui/views/certificate_selector.cc

Index: chrome/browser/ui/views/certificate_selector.cc
diff --git a/chrome/browser/ui/views/certificate_selector.cc b/chrome/browser/ui/views/certificate_selector.cc
index d2d5afb7efdd76ad6fb720c4fa4def035e56206c..ead471ba0e7705aca379cb8940497d515a578cc8 100644
--- a/chrome/browser/ui/views/certificate_selector.cc
+++ b/chrome/browser/ui/views/certificate_selector.cc
@@ -87,6 +87,11 @@ CertificateSelector::~CertificateSelector() {
   table_->SetModel(nullptr);
 }
 
+// Static.
+bool CertificateSelector::CanShow(content::WebContents* web_contents) {
+  return constrained_window::HasTopLevelDialogManager(web_contents);

[jochen (gone - plz use gerrit), 2015/07/15 13:34:01]

not sure I understand why you can't inline this here, but need to duplicate the
logic for mac and views?

[wjmaclean, 2015/07/15 13:59:58]

I guess we can. The first time I read through the code, I missed the fact that
the Mac code can see CertificateSelector. Also, I originally had been trying to
keep the GuestViewBase calls close together in constrained_window_views so that
anyone looking at one would (in all likelihood) see the other.

Done.

+}
+
 void CertificateSelector::Show() {
   constrained_window::ShowWebModalDialogViews(this, web_contents_);