Remove unnessary includes of parser.h

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"
+
 #include "src/debug/debug.h"
+#include "src/parsing/parser.h"
 
 namespace v8 {
 namespace internal {
 
+void StreamedSource::Release() {
+  parser.reset();
+  info.reset();
+  zone.reset();
+}
+
 BackgroundParsingTask::BackgroundParsingTask(
     StreamedSource* source, ScriptCompiler::CompileOptions options,
     int stack_size, Isolate* isolate)
     : source_(source), stack_size_(stack_size), script_data_(nullptr) {
   // 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);
@@ skipping 50 matching lines @@
         script_data_->data(), script_data_->length(),
         ScriptCompiler::CachedData::BufferOwned));
     script_data_->ReleaseDataOwnership();
     delete script_data_;
     script_data_ = nullptr;
   }
   source_->info->set_isolate(isolate);
 }
 }  // namespace internal
 }  // namespace v8