Merge of source position information from kernel-sdk.

runtime/vm/raw_object.h

Index: runtime/vm/raw_object.h
diff --git a/runtime/vm/raw_object.h b/runtime/vm/raw_object.h
index 50900b4991d393e79df7a857a5722261aaf03c58..d39e11c94fa6e7761d338893ffeec008ffa93075 100644
--- a/runtime/vm/raw_object.h
+++ b/runtime/vm/raw_object.h
@@ -970,6 +970,7 @@ class RawScript : public RawObject {
     kSourceTag,
     kPatchTag,
     kEvaluateTag,
+    kKernelTag,
   };
 
  private:
@@ -979,6 +980,7 @@ class RawScript : public RawObject {
   RawString* url_;
   RawString* resolved_url_;
   RawArray* compile_time_constants_;
+  RawArray* line_starts_;
   RawTokenStream* tokens_;
   RawString* source_;
   RawObject** to() { return reinterpret_cast<RawObject**>(&ptr()->source_); }