Create ast/ and parsing/ subdirectories and move appropriate files

src/parsing/scanner-character-streams.h

Index: src/parsing/scanner-character-streams.h
diff --git a/src/scanner-character-streams.h b/src/parsing/scanner-character-streams.h
similarity index 96%
rename from src/scanner-character-streams.h
rename to src/parsing/scanner-character-streams.h
index 8a0ae2392680533dff904d1aa6b869a253907617..603db93d022f9c0548219459adb610c214f1e7ab 100644
--- a/src/scanner-character-streams.h
+++ b/src/parsing/scanner-character-streams.h
@@ -2,11 +2,11 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef V8_SCANNER_CHARACTER_STREAMS_H_
-#define V8_SCANNER_CHARACTER_STREAMS_H_
+#ifndef V8_PARSING_SCANNER_CHARACTER_STREAMS_H_
+#define V8_PARSING_SCANNER_CHARACTER_STREAMS_H_
 
 #include "src/handles.h"
-#include "src/scanner.h"
+#include "src/parsing/scanner.h"
 #include "src/vector.h"
 
 namespace v8 {
@@ -186,4 +186,4 @@ class ExternalTwoByteStringUtf16CharacterStream: public Utf16CharacterStream {
 }  // namespace internal
 }  // namespace v8
 
-#endif  // V8_SCANNER_CHARACTER_STREAMS_H_
+#endif  // V8_PARSING_SCANNER_CHARACTER_STREAMS_H_