Include stdio.h for stderr.

Source/platform/graphics/paint/DisplayItemList.cpp

 // 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 "config.h"
 #include "platform/graphics/paint/DisplayItemList.h"
 
 #include "platform/NotImplemented.h"
 #include "platform/RuntimeEnabledFeatures.h"
 #ifndef NDEBUG
 #include "platform/graphics/paint/DisplayItem.h"
 #include "wtf/text/StringBuilder.h"
+#include <stdio.h>
 #endif
 
 namespace blink {
 
 const PaintList& DisplayItemList::paintList()
 {
     ASSERT(RuntimeEnabledFeatures::slimmingPaintEnabled());
 
     updatePaintList();
     return m_paintList;
@@ skipping 103 matching lines @@
 
 void DisplayItemList::showDebugData() const
 {
     fprintf(stderr, "paint list: [%s]\n", paintListAsDebugString(m_paintList).utf8().data());
     fprintf(stderr, "new paints: [%s]\n", paintListAsDebugString(m_newPaints).utf8().data());
 }
 
 #endif
 
 } // namespace blink