Collecting statistics on iframe permissions use.

content/child/permissions/permission_dispatcher.cc

Index: content/child/permissions/permission_dispatcher.cc
diff --git a/content/child/permissions/permission_dispatcher.cc b/content/child/permissions/permission_dispatcher.cc
index eb5ac4538f0f9caf86adea7769ed9ab016e18e7b..2f65a6515d495a873ec8a56b3016ee5bcbceae91 100644
--- a/content/child/permissions/permission_dispatcher.cc
+++ b/content/child/permissions/permission_dispatcher.cc
@@ -56,6 +56,8 @@ blink::WebPermissionStatus GetWebPermissionStatus(PermissionStatus status) {
       return blink::WebPermissionStatusDenied;
     case PERMISSION_STATUS_ASK:
       return blink::WebPermissionStatusPrompt;
+    case PERMISSION_STATUS_NUM:
+      break;

[jww, 2015/07/07 18:41:46]

Again, shouldn't this be a NOTREACHED (and of course add a comment to all these
functions specifying that PERMISSION_STATUS_NUM should never be passed in)

[keenanb, 2015/07/07 21:02:59]

Done.

   }
 
   NOTREACHED();