Emit source positions in deopt comments, too.

src/deoptimizer.h

Index: src/deoptimizer.h
diff --git a/src/deoptimizer.h b/src/deoptimizer.h
index 281751cbf17a88d79db553945a58b82af505b255..3cf0a3e6e3aeb52c87873ea432d7497fbf176dcb 100644
--- a/src/deoptimizer.h
+++ b/src/deoptimizer.h
@@ -102,7 +102,9 @@ class Deoptimizer : public Malloced {
   static const int kBailoutTypesWithCodeEntry = SOFT + 1;
 
   struct Reason {
-    Reason(const char* m, const char* d) : mnemonic(m), detail(d) {}
+    Reason(int r, const char* m, const char* d)
+        : raw_position(r), mnemonic(m), detail(d) {}
+    int raw_position;
     const char* mnemonic;
     const char* detail;
   };