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

components/test_runner/mock_spell_check.cc

 // Copyright 2014 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 "components/test_runner/mock_spell_check.h"
 
+#include <algorithm>
+
 #include "base/logging.h"
 #include "components/test_runner/test_common.h"
 #include "third_party/WebKit/public/platform/WebCString.h"
 
 namespace test_runner {
 
 namespace {
 
 void Append(blink::WebVector<blink::WebString>* data,
             const blink::WebString& item) {
@@ skipping 148 matching lines @@
   // Mark as initialized to prevent this object from being initialized twice
   // or more.
   initialized_ = true;
 
   // Since this MockSpellCheck class doesn't download dictionaries, this
   // function always returns false.
   return false;
 }
 
 }  // namespace test_runner