Create ast/ and parsing/ subdirectories and move appropriate files

test/cctest/compiler/test-simplified-lowering.cc

 // Copyright 2014 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.
 
 // TODO(jochen): Remove this after the setting is turned on globally.
 #define V8_IMMINENT_DEPRECATION_WARNINGS
 
 #include <limits>
 
+#include "src/ast/scopes.h"
 #include "src/compiler/access-builder.h"
 #include "src/compiler/change-lowering.h"
 #include "src/compiler/control-builders.h"
 #include "src/compiler/graph-reducer.h"
 #include "src/compiler/graph-visualizer.h"
 #include "src/compiler/node-properties.h"
 #include "src/compiler/pipeline.h"
 #include "src/compiler/representation-change.h"
 #include "src/compiler/simplified-lowering.h"
 #include "src/compiler/source-position.h"
 #include "src/compiler/typer.h"
 #include "src/compiler/verifier.h"
 #include "src/execution.h"
-#include "src/parser.h"
-#include "src/rewriter.h"
-#include "src/scopes.h"
+#include "src/parsing/parser.h"
+#include "src/parsing/rewriter.h"
 #include "test/cctest/cctest.h"
 #include "test/cctest/compiler/codegen-tester.h"
 #include "test/cctest/compiler/function-tester.h"
 #include "test/cctest/compiler/graph-builder-tester.h"
 #include "test/cctest/compiler/value-helper.h"
 
 namespace v8 {
 namespace internal {
 namespace compiler {
 
@@ skipping 1918 matching lines @@
     t.Return(use);
     t.Lower();
 
     CHECK_EQ(d.expected, OpParameter<MachineType>(phi));
   }
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8