First step toward deoptimization using deoptimization info: splits deoptimization into two steps: c…

runtime/vm/isolate.cc

Index: runtime/vm/isolate.cc
===================================================================
--- runtime/vm/isolate.cc	(revision 10031)
+++ runtime/vm/isolate.cc	(working copy)
@@ -166,7 +166,10 @@
       message_handler_(NULL),
       spawn_data_(NULL),
       gc_prologue_callbacks_(),
-      gc_epilogue_callbacks_() {
+      gc_epilogue_callbacks_(),
+      deopt_registers_copy_(NULL),
+      deopt_frame_copy_(NULL),
+      deopt_frame_copy_size_(0) {
 }