Create ast/ and parsing/ subdirectories and move appropriate files

src/ast/ast-expression-visitor.cc

 // Copyright 2015 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.
 
 #include "src/v8.h"
 
-#include "src/ast-expression-visitor.h"
+#include "src/ast/ast-expression-visitor.h"
 
-#include "src/ast.h"
+#include "src/ast/ast.h"
+#include "src/ast/scopes.h"
 #include "src/codegen.h"
-#include "src/scopes.h"
 
 namespace v8 {
 namespace internal {
 
 
 #define RECURSE(call)               \
   do {                              \
     DCHECK(!HasStackOverflow());    \
     call;                           \
     if (HasStackOverflow()) return; \
@@ skipping 367 matching lines @@
 void AstExpressionVisitor::VisitSuperCallReference(SuperCallReference* expr) {
   VisitExpression(expr);
   RECURSE_EXPRESSION(VisitVariableProxy(expr->this_var()));
   RECURSE_EXPRESSION(VisitVariableProxy(expr->new_target_var()));
   RECURSE_EXPRESSION(VisitVariableProxy(expr->this_function_var()));
 }
 
 
 }  // namespace internal
 }  // namespace v8