Parsing: Make Parser not know about Isolate during background parsing.

src/runtime/runtime-debug.cc

Index: src/runtime/runtime-debug.cc
diff --git a/src/runtime/runtime-debug.cc b/src/runtime/runtime-debug.cc
index a1a5ee196800f04cdd918b319d40db56b73e989c..f8c123867ae0493337a344499898dc32c33f0ba3 100644
--- a/src/runtime/runtime-debug.cc
+++ b/src/runtime/runtime-debug.cc
@@ -1208,14 +1208,14 @@ class ScopeIterator {
           info.MarkAsEval();
           info.SetContext(Handle<Context>(function_->context()));
         }
-        if (Parser::Parse(&info) && Scope::Analyze(&info)) {
+        if (Parser::ParseStatic(&info) && Scope::Analyze(&info)) {
           scope = info.function()->scope();
         }
         RetrieveScopeChain(scope, shared_info);
       } else {
         // Function code
         CompilationInfoWithZone info(shared_info);
-        if (Parser::Parse(&info) && Scope::Analyze(&info)) {
+        if (Parser::ParseStatic(&info) && Scope::Analyze(&info)) {
           scope = info.function()->scope();
         }
         RetrieveScopeChain(scope, shared_info);