Rollback of r12868, r12849 in trunk branch.

src/bootstrapper.cc

Index: src/bootstrapper.cc
diff --git a/src/bootstrapper.cc b/src/bootstrapper.cc
index 5d246e0751021fc7cce60d3f59303a5408f6029d..5e1f80ebc9de7147dee429021eb37dc5a0017261 100644
--- a/src/bootstrapper.cc
+++ b/src/bootstrapper.cc
@@ -1240,9 +1240,8 @@ bool Genesis::InitializeGlobal(Handle<GlobalObject> inner_global,
   // Initialize the out of memory slot.
   native_context()->set_out_of_memory(heap->false_value());
 
-  // Initialize the embedder data slot.
-  Handle<FixedArray> embedder_data = factory->NewFixedArray(2);
-  native_context()->set_embedder_data(*embedder_data);
+  // Initialize the data slot.
+  native_context()->set_data(heap->undefined_value());
 
   {
     // Initialize the random seed slot.