RFC: Switch to ast ids (instead of positions) for type feedback.

src/deoptimizer.h

Index: src/deoptimizer.h
diff --git a/src/deoptimizer.h b/src/deoptimizer.h
index 32edd1009f576cf0b97f312838a5edff4caf7b64..4f1bec03d7ad04a48fe944bc871e602ba55a641f 100644
--- a/src/deoptimizer.h
+++ b/src/deoptimizer.h
@@ -146,7 +146,7 @@ class Deoptimizer : public Malloced {
   static Address GetDeoptimizationEntry(int id, BailoutType type);
   static int GetDeoptimizationId(Address addr, BailoutType type);
   static unsigned GetOutputInfo(DeoptimizationOutputData* data,
-                                unsigned node_id,
+                                AstId id,
                                 SharedFunctionInfo* shared);
 
   static void Setup();