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

test/cctest/compiler/test-codegen-deopt.cc

Index: test/cctest/compiler/test-codegen-deopt.cc
diff --git a/test/cctest/compiler/test-codegen-deopt.cc b/test/cctest/compiler/test-codegen-deopt.cc
index e017cd6c4ac6163bc2ba1bf87e1cc54055302b94..a90e4025dc82d2689aa43c1cde1c316a8a6addc7 100644
--- a/test/cctest/compiler/test-codegen-deopt.cc
+++ b/test/cctest/compiler/test-codegen-deopt.cc
@@ -46,7 +46,7 @@ class DeoptCodegenTester {
         function(NewFunction(src)),
         info(function, scope->main_zone()),
         bailout_id(-1) {
-    CHECK(Parser::Parse(&info));
+    CHECK(Parser::ParseStatic(&info));
     info.SetOptimizing(BailoutId::None(), Handle<Code>(function->code()));
     CHECK(Compiler::Analyze(&info));
     CHECK(Compiler::EnsureDeoptimizationSupport(&info));