Use stricter type checking in UMA_HISTOGRAM_ENUMERATION

net/quic/chromium/quic_connection_logger.cc

 // Copyright (c) 2013 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/quic/chromium/quic_connection_logger.h"
 
 #include <algorithm>
 #include <limits>
 #include <memory>
 #include <utility>
@@ skipping 250 matching lines @@
 void UpdatePublicResetAddressMismatchHistogram(
     const IPEndPoint& server_hello_address,
     const IPEndPoint& public_reset_address) {
   int sample = GetAddressMismatch(server_hello_address, public_reset_address);
   // We are seemingly talking to an older server that does not support the
   // feature, so we can't report the results in the histogram.
   if (sample < 0) {
     return;
   }
   UMA_HISTOGRAM_ENUMERATION("Net.QuicSession.PublicResetAddressMismatch2",
-                            sample, QUIC_ADDRESS_MISMATCH_MAX);
+                            static_cast<QuicAddressMismatch>(sample),
+                            QUIC_ADDRESS_MISMATCH_MAX);
 }
 
 // If |address| is an IPv4-mapped IPv6 address, returns ADDRESS_FAMILY_IPV4
 // instead of ADDRESS_FAMILY_IPV6. Othewise, behaves like GetAddressFamily().
 AddressFamily GetRealAddressFamily(const IPAddress& address) {
   return address.IsIPv4MappedIPv6() ? ADDRESS_FAMILY_IPV4
                                     : GetAddressFamily(address);
 }
 
 }  // namespace
@@ skipping 425 matching lines @@
 
   string prefix("Net.QuicSession.PacketLossRate_");
   base::HistogramBase* histogram = base::Histogram::FactoryGet(
       prefix + connection_description_, 1, 1000, 75,
       base::HistogramBase::kUmaTargetedHistogramFlag);
   histogram->Add(static_cast<base::HistogramBase::Sample>(
       ReceivedPacketLossRate() * 1000));
 }
 
 }  // namespace net