Revert "Add script streaming API."

src/background-parsing-task.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.
-
-#include "src/background-parsing-task.h"
-
-namespace v8 {
-namespace internal {
-
-BackgroundParsingTask::BackgroundParsingTask(
-    StreamedSource* source, ScriptCompiler::CompileOptions options,
-    int stack_size, Isolate* isolate)
-    : source_(source), options_(options), stack_size_(stack_size) {
-  // Prepare the data for the internalization phase and compilation phase, which
-  // will happen in the main thread after parsing.
-  source->info.Reset(new i::CompilationInfoWithZone(source->source_stream.get(),
-                                                    source->encoding, isolate));
-  source->info->MarkAsGlobal();
-
-  // We don't set the context to the CompilationInfo yet, because the background
-  // thread cannot do anything with it anyway. We set it just before compilation
-  // on the foreground thread.
-  DCHECK(options == ScriptCompiler::kProduceParserCache ||
-         options == ScriptCompiler::kProduceCodeCache ||
-         options == ScriptCompiler::kNoCompileOptions);
-  source->allow_lazy =
-      !i::Compiler::DebuggerWantsEagerCompilation(source->info.get());
-  source->hash_seed = isolate->heap()->HashSeed();
-}
-
-
-void BackgroundParsingTask::Run() {
-  DisallowHeapAllocation no_allocation;
-  DisallowHandleAllocation no_handles;
-  DisallowHandleDereference no_deref;
-
-  ScriptData* script_data = NULL;
-  if (options_ == ScriptCompiler::kProduceParserCache ||
-      options_ == ScriptCompiler::kProduceCodeCache) {
-    source_->info->SetCachedData(&script_data, options_);
-  }
-
-  uintptr_t limit = reinterpret_cast<uintptr_t>(&limit) - stack_size_ * KB;
-  Parser::ParseInfo parse_info = {limit, source_->hash_seed,
-                                  &source_->unicode_cache};
-
-  // Parser needs to stay alive for finalizing the parsing on the main
-  // thread. Passing &parse_info is OK because Parser doesn't store it.
-  source_->parser.Reset(new Parser(source_->info.get(), &parse_info));
-  source_->parser->set_allow_lazy(source_->allow_lazy);
-  source_->parser->ParseOnBackground();
-
-  if (script_data != NULL) {
-    source_->cached_data.Reset(new ScriptCompiler::CachedData(
-        script_data->data(), script_data->length(),
-        ScriptCompiler::CachedData::BufferOwned));
-    script_data->ReleaseDataOwnership();
-    delete script_data;
-  }
-}
-}
-}  // namespace v8::internal