Initial SIMDBC interpreter.

runtime/vm/raw_object.h

Index: runtime/vm/raw_object.h
diff --git a/runtime/vm/raw_object.h b/runtime/vm/raw_object.h
index f438fc9366d46f1e03a57f57e7bc43123cb40d5e..e9b56698c71fbfb3fa68164a6cddd39408feb4b6 100644
--- a/runtime/vm/raw_object.h
+++ b/runtime/vm/raw_object.h
@@ -216,6 +216,8 @@ CLASS_LIST_TYPED_DATA(V)
   friend class object;                                                         \
   friend class RawObject;                                                      \
   friend class Heap;                                                           \
+  friend class Simulator;                                                      \
+  friend class SimulatorHelpers;                                               \
   DISALLOW_ALLOCATION();                                                       \
   DISALLOW_IMPLICIT_CONSTRUCTORS(Raw##object)
 
@@ -650,6 +652,8 @@ class RawObject {
   friend class StackFrame;  // GetCodeObject assertion.
   friend class CodeLookupTableBuilder;  // profiler
   friend class NativeEntry;  // GetClassId
+  friend class Simulator;
+  friend class SimulatorHelpers;
 
   DISALLOW_ALLOCATION();
   DISALLOW_IMPLICIT_CONSTRUCTORS(RawObject);