Check alpha-sorting of includes during presubmit.

src/x87/lithium-codegen-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_LITHIUM_CODEGEN_X87_H_
 #define V8_X87_LITHIUM_CODEGEN_X87_H_
 
 #include "src/x87/lithium-x87.h"
 
 #include "src/checks.h"
 #include "src/deoptimizer.h"
-#include "src/x87/lithium-gap-resolver-x87.h"
 #include "src/lithium-codegen.h"
 #include "src/safepoint-table.h"
 #include "src/scopes.h"
 #include "src/utils.h"
+#include "src/x87/lithium-gap-resolver-x87.h"
 
 namespace v8 {
 namespace internal {
 
 // Forward declarations.
 class LDeferredCode;
 class LGapNode;
 class SafepointGenerator;
 
 class LCodeGen: public LCodeGenBase {
@@ skipping 468 matching lines @@
   Label exit_;
   Label* external_exit_;
   Label done_;
   int instruction_index_;
   LCodeGen::X87Stack x87_stack_;
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_X87_LITHIUM_CODEGEN_X87_H_