Include <algorithm> if you use functions from <algorithm>.

third_party/WebKit/Source/platform/fonts/ScriptRunIterator.cpp

 // Copyright 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 "config.h"
 #include "ScriptRunIterator.h"
 
 #include "platform/Logging.h"
 #include "wtf/Threading.h"
 
+#include <algorithm>
+
 namespace blink {
 
 typedef ScriptData::PairedBracketType PairedBracketType;
 
 const int ScriptData::kMaxScriptCount = 20;
 
 ScriptData::~ScriptData()
 {
 }
 
@@ skipping 343 matching lines @@
     return true;
 }
 
 UScriptCode ScriptRunIterator::resolveCurrentScript() const
 {
     UScriptCode result = m_currentSet.at(0);
     return result == USCRIPT_COMMON ? m_commonPreferred : result;
 }
 
 } // namespace blink