Create ast/ and parsing/ subdirectories and move appropriate files

src/ast/variables.h

Index: src/ast/variables.h
diff --git a/src/variables.h b/src/ast/variables.h
similarity index 98%
rename from src/variables.h
rename to src/ast/variables.h
index a9cd5dcfec735a13ac4304252a48721cefde4c1e..4057d2b5f629b809a67302ec8e946ac6ec714b52 100644
--- a/src/variables.h
+++ b/src/ast/variables.h
@@ -2,10 +2,10 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef V8_VARIABLES_H_
-#define V8_VARIABLES_H_
+#ifndef V8_AST_VARIABLES_H_
+#define V8_AST_VARIABLES_H_
 
-#include "src/ast-value-factory.h"
+#include "src/ast/ast-value-factory.h"
 #include "src/zone.h"
 
 namespace v8 {
@@ -211,4 +211,4 @@ class ClassVariable : public Variable {
 }  // namespace internal
 }  // namespace v8
 
-#endif  // V8_VARIABLES_H_
+#endif  // V8_AST_VARIABLES_H_