Check alpha-sorting of includes during presubmit.

src/unicode.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 //
 // This file was generated at 2014-02-07 15:31:16.733174
 
 #include "src/unicode-inl.h"
+#include <stdio.h>
 #include <stdlib.h>
-#include <stdio.h>
 
 namespace unibrow {
 
 static const int kStartBit = (1 << 30);
 static const int kChunkBits = (1 << 13);
 static const uchar kSentinel = static_cast<uchar>(-1);
 
 /**
  * \file
  * Implementations of functions for working with unicode.
@@ skipping 1797 matching lines @@
       + kEcma262UnCanonicalizeMultiStrings0Size * sizeof(MultiCharacterSpecialCase<4>)  // NOLINT
       + kEcma262UnCanonicalizeMultiStrings1Size * sizeof(MultiCharacterSpecialCase<2>)  // NOLINT
       + kEcma262UnCanonicalizeMultiStrings5Size * sizeof(MultiCharacterSpecialCase<2>)  // NOLINT
       + kEcma262UnCanonicalizeMultiStrings7Size * sizeof(MultiCharacterSpecialCase<2>)  // NOLINT
       + kCanonicalizationRangeMultiStrings0Size * sizeof(MultiCharacterSpecialCase<1>)  // NOLINT
       + kCanonicalizationRangeMultiStrings1Size * sizeof(MultiCharacterSpecialCase<1>)  // NOLINT
       + kCanonicalizationRangeMultiStrings7Size * sizeof(MultiCharacterSpecialCase<1>); // NOLINT
 }
 
 }  // namespace unicode