Drop "Interface" from name of QUIC debug interfaces that should not be

net/quic/quic_connection.h

Index: net/quic/quic_connection.h
diff --git a/net/quic/quic_connection.h b/net/quic/quic_connection.h
index 0cabfe1bd2e0c0077b296b46f467a19c7abeaf86..c35e863baecd6d54e0f1d177b07844d4d313e571 100644
--- a/net/quic/quic_connection.h
+++ b/net/quic/quic_connection.h
@@ -111,10 +111,10 @@ class NET_EXPORT_PRIVATE QuicConnectionVisitorInterface {
 // Interface which gets callbacks from the QuicConnection at interesting
 // points.  Implementations must not mutate the state of the connection
 // as a result of these callbacks.
-class NET_EXPORT_PRIVATE QuicConnectionDebugVisitorInterface
-    : public QuicPacketGenerator::DebugDelegateInterface {
+class NET_EXPORT_PRIVATE QuicConnectionDebugVisitor
+    : public QuicPacketGenerator::DebugDelegate {
  public:
-  virtual ~QuicConnectionDebugVisitorInterface() {}
+  virtual ~QuicConnectionDebugVisitor() {}
 
   // Called when a packet has been sent.
   virtual void OnPacketSent(QuicPacketSequenceNumber sequence_number,
@@ -344,7 +344,7 @@ class NET_EXPORT_PRIVATE QuicConnection
   void set_visitor(QuicConnectionVisitorInterface* visitor) {
     visitor_ = visitor;
   }
-  void set_debug_visitor(QuicConnectionDebugVisitorInterface* debug_visitor) {
+  void set_debug_visitor(QuicConnectionDebugVisitor* debug_visitor) {
     debug_visitor_ = debug_visitor;
     packet_generator_.set_debug_delegate(debug_visitor);
   }
@@ -698,7 +698,7 @@ class NET_EXPORT_PRIVATE QuicConnection
   scoped_ptr<QuicAlarm> ping_alarm_;
 
   QuicConnectionVisitorInterface* visitor_;
-  QuicConnectionDebugVisitorInterface* debug_visitor_;
+  QuicConnectionDebugVisitor* debug_visitor_;
   QuicPacketCreator packet_creator_;
   QuicPacketGenerator packet_generator_;