NOT YET READY: UMA recording the kind of target frame when extensions pierce browsing instance.

chrome/common/extensions/sync_helper.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/common/extensions/sync_helper.h"
 
 #include "base/logging.h"
 #include "chrome/common/extensions/extension_constants.h"
 #include "extensions/common/constants.h"
 #include "extensions/common/extension.h"
@@ skipping 53 matching lines @@
 
     case Manifest::TYPE_USER_SCRIPT:
       // We only want to sync user scripts with gallery update URLs.
       if (ManifestURL::UpdatesFromGallery(extension))
         return true;
       return false;
 
     case Manifest::TYPE_UNKNOWN:
     case Manifest::TYPE_SHARED_MODULE:
       return false;
-
-    case Manifest::NUM_LOAD_TYPES:
-      NOTREACHED();
   }
   NOTREACHED();
   return false;
 }
 
 bool IsSyncableComponentExtension(const Extension* extension) {
   if (!Manifest::IsComponentLocation(extension->location()))
     return false;
   return (extension->id() == extensions::kWebStoreAppId) ||
          (extension->id() == extension_misc::kChromeAppId);
 }
 
 }  // namespace sync_helper
 }  // namespace extensions