Switch from AST node ids to computation ids (cid). In addition to computations,…

runtime/vm/isolate.h

Index: runtime/vm/isolate.h
===================================================================
--- runtime/vm/isolate.h	(revision 7204)
+++ runtime/vm/isolate.h	(working copy)
@@ -160,9 +160,13 @@
   uword spawn_data() const { return spawn_data_; }
   void set_spawn_data(uword value) { spawn_data_ = value; }
 
+  // Deprecate.
   intptr_t ast_node_id() const { return ast_node_id_; }
   void set_ast_node_id(int value) { ast_node_id_ = value; }
 
+  intptr_t computation_id() const { return computation_id_; }
+  void set_computation_id(int value) { computation_id_ = value; }
+
   Debugger* debugger() const { return debugger_; }
 
   static void SetCreateCallback(Dart_IsolateCreateCallback cback);
@@ -208,7 +212,8 @@
   Debugger* debugger_;
   LongJump* long_jump_base_;
   TimerList timer_list_;
-  intptr_t ast_node_id_;
+  intptr_t ast_node_id_;  // Deprecate.
+  intptr_t computation_id_;
   Mutex* mutex_;  // protects stack_limit_ and saved_stack_limit_.
   uword stack_limit_;
   uword saved_stack_limit_;