Fix the build after previous commit.

src/bootstrapper.cc

Index: src/bootstrapper.cc
diff --git a/src/bootstrapper.cc b/src/bootstrapper.cc
index 6dd9fc598a5fda7ea80ba65384a9c06ef059082b..727d4a6ef664cd37ce4006874002296d651683e2 100644
--- a/src/bootstrapper.cc
+++ b/src/bootstrapper.cc
@@ -824,7 +824,8 @@ bool Genesis::CompileScriptCached(Vector<const char> name,
     ASSERT(source->IsAsciiRepresentation());
     Handle<String> script_name = Factory::NewStringFromUtf8(name);
     boilerplate =
-        Compiler::Compile(source, script_name, 0, 0, extension, NULL);
+        Compiler::Compile(source, script_name, 0, 0, extension, NULL,
+                          Handle<String>::null());
     if (boilerplate.is_null()) return false;
     cache->Add(name, boilerplate);
   }