Add UMA for recording embargo reasons and autoblocker interactions.

chrome/browser/permissions/permission_decision_auto_blocker.cc

Index: chrome/browser/permissions/permission_decision_auto_blocker.cc
diff --git a/chrome/browser/permissions/permission_decision_auto_blocker.cc b/chrome/browser/permissions/permission_decision_auto_blocker.cc
index 9bf499faad2b6b92ba052770636442bf8a1b54fd..f8ab89c4ca566987f47f46b2bca75552a48fa3ef 100644
--- a/chrome/browser/permissions/permission_decision_auto_blocker.cc
+++ b/chrome/browser/permissions/permission_decision_auto_blocker.cc
@@ -271,11 +271,7 @@ void PermissionDecisionAutoBlocker::UpdateEmbargoedStatus(
     const GURL& request_origin,
     content::WebContents* web_contents,
     base::Callback<void(bool)> callback) {
-  // Check if origin is currently under embargo for the requested permission.
-  if (IsUnderEmbargo(permission, request_origin)) {
-    callback.Run(true /* permission_blocked */);
-    return;
-  }
+  DCHECK(!IsUnderEmbargo(permission, request_origin));
 
   if (base::FeatureList::IsEnabled(features::kPermissionsBlacklist) &&
       db_manager_) {