Create ast/ and parsing/ subdirectories and move appropriate files

src/parsing/expression-classifier.h

Index: src/parsing/expression-classifier.h
diff --git a/src/expression-classifier.h b/src/parsing/expression-classifier.h
similarity index 98%
rename from src/expression-classifier.h
rename to src/parsing/expression-classifier.h
index 7392a7add8bd3c6ff63a8aba043c66cbfdb52ce8..c9f291a7429543c8b395cbcf348b369dc085c267 100644
--- a/src/expression-classifier.h
+++ b/src/parsing/expression-classifier.h
@@ -2,12 +2,12 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef V8_EXPRESSION_CLASSIFIER_H
-#define V8_EXPRESSION_CLASSIFIER_H
+#ifndef V8_PARSING_EXPRESSION_CLASSIFIER_H
+#define V8_PARSING_EXPRESSION_CLASSIFIER_H
 
 #include "src/messages.h"
-#include "src/scanner.h"
-#include "src/token.h"
+#include "src/parsing/scanner.h"
+#include "src/parsing/token.h"
 
 namespace v8 {
 namespace internal {
@@ -301,4 +301,4 @@ class ExpressionClassifier {
 }  // namespace internal
 }  // namespace v8
 
-#endif  // V8_EXPRESSION_CLASSIFIER_H
+#endif  // V8_PARSING_EXPRESSION_CLASSIFIER_H