Two-threaded parser

src/isolate.h

Index: src/isolate.h
diff --git a/src/isolate.h b/src/isolate.h
index 1e955a92c6a275a41a65c6fb52a3227ce2a7b1ad..8ae14b5e76651dfb6a4567ec046a1ebde0333cbb 100644
--- a/src/isolate.h
+++ b/src/isolate.h
@@ -45,6 +45,7 @@ class EmptyStatement;
 class ExternalCallbackScope;
 class ExternalReferenceTable;
 class Factory;
+class FastParserThread;
 class FunctionInfoListener;
 class HandleScopeImplementer;
 class HeapProfiler;
@@ -1026,6 +1027,10 @@ class Isolate {
     return optimizing_compiler_thread_;
   }
 
+  FastParserThread* fast_parser_thread() {
+    return fast_parser_thread_;
+  }
+
   int num_sweeper_threads() const {
     return num_sweeper_threads_;
   }
@@ -1276,6 +1281,7 @@ class Isolate {
 
   DeferredHandles* deferred_handles_head_;
   OptimizingCompilerThread* optimizing_compiler_thread_;
+  FastParserThread* fast_parser_thread_;
   SweeperThread** sweeper_thread_;
   int num_sweeper_threads_;