Replace SSLProtocolNegotiation histogram with SSLNegotiatedAlpnProtocol.

net/http/http_response_info.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/http/http_response_info.h"
 
 #include "base/logging.h"
 #include "base/pickle.h"
 #include "base/time/time.h"
 #include "net/base/auth.h"
@@ skipping 389 matching lines @@
 HttpResponseInfo::ConnectionInfo HttpResponseInfo::ConnectionInfoFromNextProto(
     NextProto next_proto) {
   switch (next_proto) {
     case kProtoHTTP2:
       return CONNECTION_INFO_HTTP2;
     case kProtoQUIC1SPDY3:
       return CONNECTION_INFO_QUIC1_SPDY3;
 
     case kProtoUnknown:
     case kProtoHTTP11:
+    case kProtoNumberOfNextProtos:

[davidben, 2016/08/27 02:27:58]

If you keep the count value (see later comment), it should probably be
NOTREACHED().

[Bence, 2016/08/29 12:54:33]

Changed to kProtoLast, moot.

       break;
   }
 
   NOTREACHED();
   return CONNECTION_INFO_UNKNOWN;
 }
 
 // static
 std::string HttpResponseInfo::ConnectionInfoToString(
     ConnectionInfo connection_info) {
@@ skipping 22 matching lines @@
     case CONNECTION_INFO_HTTP1_0:
       return "http/1.0";
     case NUM_OF_CONNECTION_INFOS:
       break;
   }
   NOTREACHED();
   return "";
 }
 
 }  // namespace net