diff --git a/api/uma_metrics.h b/api/uma_metrics.h
index 51b0ff06c8..8436d4f9e5 100644
--- a/api/uma_metrics.h
+++ b/api/uma_metrics.h
@@ -37,12 +37,6 @@ enum PeerConnectionAddressFamilyCounter {
   kPeerConnectionAddressFamilyCounter_Max,
 };
 
-// TODO(guoweis): Keep previous name here until all references are renamed.
-#define kBoundary kPeerConnectionAddressFamilyCounter_Max
-
-// TODO(guoweis): Keep previous name here until all references are renamed.
-typedef PeerConnectionAddressFamilyCounter PeerConnectionUMAMetricsCounter;
-
 // This enum defines types for UMA samples, which will have a range.
 enum PeerConnectionMetricsName {
   kNetworkInterfaces_IPv4,  // Number of IPv4 interfaces.
@@ -53,9 +47,6 @@ enum PeerConnectionMetricsName {
   kPeerConnectionMetricsName_Max
 };
 
-// TODO(guoweis): Keep previous name here until all references are renamed.
-typedef PeerConnectionMetricsName PeerConnectionUMAMetricsName;
-
 // The IceCandidatePairType has the format of
 // <local_candidate_type>_<remote_candidate_type>. It is recorded based on the
 // type of candidate pair used when the PeerConnection first goes to a completed