[GCM] API update to allow only a single sender in registration

chrome/browser/invalidation/gcm_network_channel_delegate_impl.cc

Index: chrome/browser/invalidation/gcm_network_channel_delegate_impl.cc
diff --git a/chrome/browser/invalidation/gcm_network_channel_delegate_impl.cc b/chrome/browser/invalidation/gcm_network_channel_delegate_impl.cc
index dda940d8a591934fd9aa20e571e4800ead155041..4affe00b83eaeebd2f1867b3a3011a8869b95747 100644
--- a/chrome/browser/invalidation/gcm_network_channel_delegate_impl.cc
+++ b/chrome/browser/invalidation/gcm_network_channel_delegate_impl.cc
@@ -80,11 +80,9 @@ void RegisterCall::RegisterOnUIThread() {
   if (gcm_profile_service == NULL)
     return;
 
-  std::vector<std::string> sender_ids;
-  sender_ids.push_back(kInvalidationsSenderId);
   gcm_profile_service->Register(
       kInvalidationsAppId,
-      sender_ids,
+      kInvalidationsSenderId,
       kInvalidationsCert,
       base::Bind(&RegisterCall::RegisterFinishedOnUIThread, this));
 }