Check alpha-sorting of includes during presubmit.

src/x87/regexp-macro-assembler-x87.h

 // 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.
 
 #ifndef V8_X87_REGEXP_MACRO_ASSEMBLER_X87_H_
 #define V8_X87_REGEXP_MACRO_ASSEMBLER_X87_H_
 
+#include "src/macro-assembler.h"
+#include "src/x87/assembler-x87-inl.h"
 #include "src/x87/assembler-x87.h"
-#include "src/x87/assembler-x87-inl.h"
-#include "src/macro-assembler.h"
 
 namespace v8 {
 namespace internal {
 
 #ifndef V8_INTERPRETED_REGEXP
 class RegExpMacroAssemblerX87: public NativeRegExpMacroAssembler {
  public:
   RegExpMacroAssemblerX87(Mode mode, int registers_to_save, Zone* zone);
   virtual ~RegExpMacroAssemblerX87();
   virtual int stack_limit_slack();
@@ skipping 170 matching lines @@
   Label backtrack_label_;
   Label exit_label_;
   Label check_preempt_label_;
   Label stack_overflow_label_;
 };
 #endif  // V8_INTERPRETED_REGEXP
 
 }}  // namespace v8::internal
 
 #endif  // V8_X87_REGEXP_MACRO_ASSEMBLER_X87_H_