Create ast/ and parsing/ subdirectories and move appropriate files

src/background-parsing-task.h

 // 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.
 
 #ifndef V8_BACKGROUND_PARSING_TASK_H_
 #define V8_BACKGROUND_PARSING_TASK_H_
 
 #include "src/base/platform/platform.h"
 #include "src/base/platform/semaphore.h"
 #include "src/base/smart-pointers.h"
 #include "src/compiler.h"
-#include "src/parser.h"
+#include "src/parsing/parser.h"
 
 namespace v8 {
 namespace internal {
 
 // Internal representation of v8::ScriptCompiler::StreamedSource. Contains all
 // data which needs to be transmitted between threads for background parsing,
 // finalizing it on the main thread, and compiling on the main thread.
 struct StreamedSource {
   StreamedSource(ScriptCompiler::ExternalSourceStream* source_stream,
                  ScriptCompiler::StreamedSource::Encoding encoding)
@@ skipping 28 matching lines @@
   virtual void Run();
 
  private:
   StreamedSource* source_;  // Not owned.
   int stack_size_;
 };
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_BACKGROUND_PARSING_TASK_H_