permissions prompt: use unicode hostname, not IDN

chrome/browser/ui/cocoa/website_settings/permission_bubble_controller.mm

Index: chrome/browser/ui/cocoa/website_settings/permission_bubble_controller.mm
diff --git a/chrome/browser/ui/cocoa/website_settings/permission_bubble_controller.mm b/chrome/browser/ui/cocoa/website_settings/permission_bubble_controller.mm
index adf8e17fe63225bae01d16570cab452ee81fe93d..a7522922add2a5bd695855746e3d9926b75cd67c 100644
--- a/chrome/browser/ui/cocoa/website_settings/permission_bubble_controller.mm
+++ b/chrome/browser/ui/cocoa/website_settings/permission_bubble_controller.mm
@@ -36,6 +36,7 @@
 #include "components/prefs/pref_service.h"
 #include "components/strings/grit/components_strings.h"
 #include "components/url_formatter/elide_url.h"
+#include "components/url_formatter/url_formatter.h"
 #include "content/public/browser/native_web_keyboard_event.h"
 #include "content/public/browser/user_metrics.h"
 #include "skia/ext/skia_utils_mac.h"
@@ -553,11 +554,12 @@ const NSInteger kFullscreenLeftOffset = 40;
   [titleView setBezeled:NO];
   [titleView setEditable:NO];
   [titleView setSelectable:NO];
+  base::string16 displayUrl = url_formatter::FormatUrlForSecurityDisplay(
+      origin, url_formatter::SchemeDisplay::OMIT_CRYPTOGRAPHIC);
+  if (base::IsStringASCII(displayUrl))

[jungshik at Google, 2016/09/27 17:58:00]

Here does the url have any query or path part or is it just 'scheme + hostname'?
 Hmm...   even if it does not have path/query, calling IDNToUnicode over a whole
URL is odd (although likely to work in this case)  because IDNToUnicode only
deals with a hostname. 

So, I think we'd better tackle this issue in FormatUrlForSecurityDisplay.
 

+    displayUrl = url_formatter::IDNToUnicode(base::UTF16ToASCII(displayUrl));
   [titleView setStringValue:l10n_util::GetNSStringF(
-                                IDS_PERMISSIONS_BUBBLE_PROMPT,
-                                url_formatter::FormatUrlForSecurityDisplay(
-                                    origin, url_formatter::SchemeDisplay::
-                                                OMIT_CRYPTOGRAPHIC))];
+      IDS_PERMISSIONS_BUBBLE_PROMPT, displayUrl)];
   [titleView setFont:[NSFont systemFontOfSize:[NSFont smallSystemFontSize]]];
   [titleView sizeToFit];
   NSRect titleFrame = [titleView frame];