Replace SSLProtocolNegotiation histogram with SSLNegotiatedAlpnProtocol.

net/socket/ssl_client_socket.cc

 // Copyright (c) 2012 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 "net/socket/ssl_client_socket.h"
 
 #include "base/feature_list.h"
 #include "base/metrics/histogram_macros.h"
 #include "base/metrics/sparse_histogram.h"
 #include "base/strings/string_util.h"
@@ skipping 33 matching lines @@
 // static
 const char* SSLClientSocket::NextProtoToString(NextProto next_proto) {
   switch (next_proto) {
     case kProtoHTTP11:
       return "http/1.1";
     case kProtoHTTP2:
       return "h2";
     case kProtoQUIC1SPDY3:
       return "quic/1+spdy/3";
     case kProtoUnknown:
+    case kProtoNumberOfNextProtos:
       break;
   }
   return "unknown";
 }
 
 // static
 const char* SSLClientSocket::NextProtoStatusToString(
     const SSLClientSocket::NextProtoStatus status) {
   switch (status) {
     case kNextProtoUnsupported:
@@ skipping 50 matching lines @@
     wire_protos.push_back(proto.size());
     for (const char ch : proto) {
       wire_protos.push_back(static_cast<uint8_t>(ch));
     }
   }
 
   return wire_protos;
 }
 
 }  // namespace net