Include metadata in AOT to expand inline frames in stack traces and provide line numbers.

runtime/vm/code_descriptors.h

Index: runtime/vm/code_descriptors.h
diff --git a/runtime/vm/code_descriptors.h b/runtime/vm/code_descriptors.h
index cde1cfce8e1ddb9ea3611d9eadb089f6e884bb20..2500ed808d9b4ed161494d3145f11a6a204cbb63 100644
--- a/runtime/vm/code_descriptors.h
+++ b/runtime/vm/code_descriptors.h
@@ -182,11 +182,7 @@ class CodeSourceMapBuilder : public ZoneAllocated {
   void BufferChangePosition(TokenPosition pos) {
     buffered_token_pos_stack_.Last() = pos;
   }
-  void WriteChangePosition(TokenPosition pos) {
-    stream_.Write<uint8_t>(kChangePosition);
-    stream_.Write<int32_t>(static_cast<int32_t>(pos.value()));
-    written_token_pos_stack_.Last() = pos;
-  }
+  void WriteChangePosition(TokenPosition pos);
   void BufferAdvancePC(int32_t distance) { buffered_pc_offset_ += distance; }
   void WriteAdvancePC(int32_t distance) {
     stream_.Write<uint8_t>(kAdvancePC);