Remove include of stdlib.h from SkTypes.h.

tools/flatten.cpp

 /*
  * Copyright 2015 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkData.h"
 #include "SkForceLinking.h"
 #include "SkImageGenerator.h"
 #include "SkPicture.h"
 #include "SkPictureRecorder.h"
 #include "SkStream.h"
+
+#include <stdlib.h>
 #include <stdio.h>
 
 __SK_FORCE_IMAGE_DECODER_LINKING;
 
 #define ASSERTF(cond, fmt, ...) if (!(cond)) { fprintf(stderr, fmt"\n", __VA_ARGS__); exit(1); }
 
 static bool lazy_decode_bitmap(const void* src, size_t size, SkBitmap* dst) {
     SkAutoTUnref<SkData> encoded(SkData::NewWithCopy(src, size));
     return encoded && SkInstallDiscardablePixelRef(encoded, dst);
 }
@@ skipping 16 matching lines @@
     SkAutoTUnref<const SkPicture> flat(recorder.endRecordingAsPicture());
 
     // Write out that flat.skp
     SkFILEWStream wstream(flatPath);
     ASSERTF(wstream.isValid(), "Could not open %s.", flatPath);
     flat->serialize(&wstream);
     wstream.flush();
 
     return 0;
 }