Create ast/ and parsing/ subdirectories and move appropriate files

src/parsing/preparser.h

Index: src/parsing/preparser.h
diff --git a/src/preparser.h b/src/parsing/preparser.h
similarity index 99%
rename from src/preparser.h
rename to src/parsing/preparser.h
index ff9282c2eeef13748d7690c42e347860ca9b2838..e93f3f998dc27687069e47412b6db94f8de4c46c 100644
--- a/src/preparser.h
+++ b/src/parsing/preparser.h
@@ -2,17 +2,17 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef V8_PREPARSER_H
-#define V8_PREPARSER_H
+#ifndef V8_PARSING_PREPARSER_H
+#define V8_PARSING_PREPARSER_H
 
+#include "src/ast/scopes.h"
 #include "src/bailout-reason.h"
-#include "src/expression-classifier.h"
-#include "src/func-name-inferrer.h"
 #include "src/hashmap.h"
 #include "src/messages.h"
-#include "src/scanner.h"
-#include "src/scopes.h"
-#include "src/token.h"
+#include "src/parsing/expression-classifier.h"
+#include "src/parsing/func-name-inferrer.h"
+#include "src/parsing/scanner.h"
+#include "src/parsing/token.h"
 
 namespace v8 {
 namespace internal {
@@ -4259,4 +4259,4 @@ void ParserBase<Traits>::ClassLiteralChecker::CheckProperty(
 }  // namespace internal
 }  // namespace v8
 
-#endif  // V8_PREPARSER_H
+#endif  // V8_PARSING_PREPARSER_H