Check alpha-sorting of includes during presubmit.

src/objects-printer.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.
 
 #include "src/v8.h"
 
+#include "src/disasm.h"
 #include "src/disassembler.h"
-#include "src/disasm.h"
 #include "src/jsregexp.h"
 #include "src/objects-visiting.h"
 
 namespace v8 {
 namespace internal {
 
 #ifdef OBJECT_PRINT
 
 void Object::Print() {
   Print(stdout);
@@ skipping 1238 matching lines @@
     }
   }
   PrintF(out, "\n");
 }
 
 
 #endif  // OBJECT_PRINT
 
 
 } }  // namespace v8::internal