Implement core support for FixedDoubleArrays.

src/objects-visiting.cc

Index: src/objects-visiting.cc
diff --git a/src/objects-visiting.cc b/src/objects-visiting.cc
index a03c8c86bc5cafb6cf6597e2549d81c7b239bd36..3b36cbe93730814b268f14ad4037c476436e52b7 100644
--- a/src/objects-visiting.cc
+++ b/src/objects-visiting.cc
@@ -1,4 +1,4 @@
-// Copyright 2009 the V8 project authors. All rights reserved.
+// Copyright 2011 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
@@ -73,6 +73,9 @@ StaticVisitorBase::VisitorId StaticVisitorBase::GetVisitorId(
     case FIXED_ARRAY_TYPE:
       return kVisitFixedArray;
 
+    case FIXED_DOUBLE_ARRAY_TYPE:
+      return kVisitFixedDoubleArray;
+
     case ODDBALL_TYPE:
       return kVisitOddball;