Add runtime and native entry tags

runtime/vm/tags.h

Index: runtime/vm/tags.h
diff --git a/runtime/vm/tags.h b/runtime/vm/tags.h
index de0468f7d5f3db80255a3a9c2bc06318b1d82b3d..5f4b7d94fe0571fcbd3a9df6cdab6b9b73e26920 100644
--- a/runtime/vm/tags.h
+++ b/runtime/vm/tags.h
@@ -11,6 +11,7 @@ namespace dart {
 
 class Isolate;
 class JSONObject;
+class RuntimeEntry;
 
 #define VM_TAG_LIST(V)                                                         \
   V(Idle)                                                                      \
@@ -19,7 +20,8 @@ class JSONObject;
   V(Script)                                                                    \
   V(GCNewSpace)                                                                \
   V(GCOldSpace)                                                                \
-  V(RuntimeNative)                                                             \
+  V(Runtime)                                                                   \
+  V(Native)                                                                    \
 
 
 class VMTag : public AllStatic {
@@ -34,6 +36,12 @@ class VMTag : public AllStatic {
   };
 
   static const char* TagName(uword id);
+  static bool IsNativeEntryTag(uword id);
+
+  static bool IsRuntimeEntryTag(uword id);
+  static const char* RuntimeEntryTagName(uword id);
+
+  static void RegisterRuntimeEntry(RuntimeEntry* runtime_entry);
 
  private:
   struct TagEntry {