GDBJIT: Add gdbjit_zone for --gdbjit_full

src/isolate.cc

Index: src/isolate.cc
===================================================================
--- src/isolate.cc	(revision 14041)
+++ src/isolate.cc	(working copy)
@@ -1663,6 +1663,9 @@
       handle_scope_implementer_(NULL),
       unicode_cache_(NULL),
       runtime_zone_(this),
+#ifdef ENABLE_GDB_JIT_INTERFACE
+      gdbjit_zone_(this),
+#endif
       in_use_list_(0),
       free_list_(0),
       preallocated_storage_preallocated_(false),
@@ -1858,6 +1861,10 @@
   // Has to be called while counters_ are still alive.
   runtime_zone_.DeleteKeptSegment();
 
+#ifdef ENABLE_GDB_JIT_INTERFACE
+  gdbjit_zone_.DeleteKeptSegment();
+#endif
+
   delete[] assembler_spare_buffer_;
   assembler_spare_buffer_ = NULL;