Source positions for constructors and lots of async machinery

runtime/vm/intermediate_language.cc

Index: runtime/vm/intermediate_language.cc
diff --git a/runtime/vm/intermediate_language.cc b/runtime/vm/intermediate_language.cc
index 90f91ef2b288169fc63cf86d21c5aa23a47138ea..12663f381fff42a7116b2491b26bc3a9f9a44927 100644
--- a/runtime/vm/intermediate_language.cc
+++ b/runtime/vm/intermediate_language.cc
@@ -2734,7 +2734,7 @@ void JoinEntryInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
   if (!compiler->is_optimizing()) {
     compiler->AddCurrentDescriptor(RawPcDescriptors::kDeopt,
                                    GetDeoptId(),
-                                   Scanner::kNoSourcePos);
+                                   Token::kNoSourcePos);
   }
   if (HasParallelMove()) {
     compiler->parallel_move_resolver()->EmitNativeCode(parallel_move());
@@ -2760,7 +2760,7 @@ void TargetEntryInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
     // code that matches backwards from the end of the pattern.
     compiler->AddCurrentDescriptor(RawPcDescriptors::kDeopt,
                                    GetDeoptId(),
-                                   Scanner::kNoSourcePos);
+                                   Token::kNoSourcePos);
   }
   if (HasParallelMove()) {
     compiler->parallel_move_resolver()->EmitNativeCode(parallel_move());