Improve error messaging of webRequest API in case of conflicts

chrome/common/chrome_notification_types.h

Index: chrome/common/chrome_notification_types.h
diff --git a/chrome/common/chrome_notification_types.h b/chrome/common/chrome_notification_types.h
index 55988a94a6b791b4797a27ca6d47850587a0e637..a3821f28ec21789fd99279328dc918c1d4cbde59 100644
--- a/chrome/common/chrome_notification_types.h
+++ b/chrome/common/chrome_notification_types.h
@@ -680,11 +680,6 @@ enum NotificationType {
   // (const std::string).
   NOTIFICATION_EXTENSION_UPDATE_FOUND,
 
-  // Sent when one or more extensions changed their warning status (like
-  // slowing down Chrome or conflicting with each other).
-  // The source is a Profile.
-  NOTIFICATION_EXTENSION_WARNING_CHANGED,
-
   // An installed app changed notification state (added or removed
   // notifications). The source is a Profile, and the details are a string
   // with the extension id of the app.