Revert "Add script streaming API."

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/compiler.h"
-#include "src/parser.h"
-#include "src/smart-pointers.h"
-
-namespace v8 {
-namespace internal {
-
-class Parser;
-
-// 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)
-      : source_stream(source_stream),
-        encoding(encoding),
-        hash_seed(0),
-        allow_lazy(false) {}
-
-  // Internal implementation of v8::ScriptCompiler::StreamedSource.
-  SmartPointer<ScriptCompiler::ExternalSourceStream> source_stream;
-  ScriptCompiler::StreamedSource::Encoding encoding;
-  SmartPointer<ScriptCompiler::CachedData> cached_data;
-
-  // Data needed for parsing, and data needed to to be passed between thread
-  // between parsing and compilation. These need to be initialized before the
-  // compilation starts.
-  UnicodeCache unicode_cache;
-  SmartPointer<CompilationInfo> info;
-  uint32_t hash_seed;
-  bool allow_lazy;
-  SmartPointer<Parser> parser;
-
- private:
-  // Prevent copying. Not implemented.
-  StreamedSource(const StreamedSource&);
-  StreamedSource& operator=(const StreamedSource&);
-};
-
-
-class BackgroundParsingTask : public ScriptCompiler::ScriptStreamingTask {
- public:
-  BackgroundParsingTask(StreamedSource* source,
-                        ScriptCompiler::CompileOptions options, int stack_size,
-                        Isolate* isolate);
-
-  virtual void Run();
-
- private:
-  StreamedSource* source_;  // Not owned.
-  ScriptCompiler::CompileOptions options_;
-  int stack_size_;
-};
-}
-}  // namespace v8::internal
-
-#endif  // V8_BACKGROUND_PARSING_TASK_H_