Check alpha-sorting of includes during presubmit.

src/typing.h

 // Copyright 2013 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_TYPING_H_
 #define V8_TYPING_H_
 
 #include "src/v8.h"
 
 #include "src/allocation.h"
 #include "src/ast.h"
 #include "src/compiler.h"
+#include "src/effects.h"
+#include "src/scopes.h"
 #include "src/type-info.h"
 #include "src/types.h"
-#include "src/effects.h"
 #include "src/zone.h"
-#include "src/scopes.h"
 
 namespace v8 {
 namespace internal {
 
 
 class AstTyper: public AstVisitor {
  public:
   static void Run(CompilationInfo* info);
 
   void* operator new(size_t size, Zone* zone) {
@@ skipping 50 matching lines @@
 #define DECLARE_VISIT(type) virtual void Visit##type(type* node);
   AST_NODE_LIST(DECLARE_VISIT)
 #undef DECLARE_VISIT
 
   DISALLOW_COPY_AND_ASSIGN(AstTyper);
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_TYPING_H_