Allow std::unordered_*.

net/spdy/spdy_alt_svc_wire_format.cc

 // Copyright (c) 2015 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/spdy/spdy_alt_svc_wire_format.h"
 
+#include <algorithm>
 #include <limits>
 #include <string>
 
 #include "base/logging.h"
 #include "base/strings/stringprintf.h"
 
 namespace net {
 
 using base::StringPiece;
 
@@ skipping 369 matching lines @@
   ++c;
   double place_value = 0.1;
   for (; c != end && isdigit(*c); ++c) {
     *probability += place_value * (*c - '0');
     place_value *= 0.1;
   }
   return (c == end && *probability <= 1.0);
 }
 
 }  // namespace net