Source positions for constructors and lots of async machinery

runtime/vm/intermediate_language_arm.cc

Index: runtime/vm/intermediate_language_arm.cc
diff --git a/runtime/vm/intermediate_language_arm.cc b/runtime/vm/intermediate_language_arm.cc
index 9120195ffdee0154c7a9776b4290b32500fabcf6..c58577177de566f8371c685a506b74b358fa8d16 100644
--- a/runtime/vm/intermediate_language_arm.cc
+++ b/runtime/vm/intermediate_language_arm.cc
@@ -1834,7 +1834,7 @@ class BoxAllocationSlowPath : public SlowPathCode {
     locs->live_registers()->Remove(Location::RegisterLocation(result_));
 
     compiler->SaveLiveRegisters(locs);
-    compiler->GenerateCall(Scanner::kNoSourcePos,  // No token position.
+    compiler->GenerateCall(Token::kNoSourcePos,  // No token position.
                            stub_entry,
                            RawPcDescriptors::kOther,
                            locs);
@@ -6651,7 +6651,7 @@ void GotoInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
     // may be inserted before this instruction.
     compiler->AddCurrentDescriptor(RawPcDescriptors::kDeopt,
                                    GetDeoptId(),
-                                   Scanner::kNoSourcePos);
+                                   Token::kNoSourcePos);
   }
   if (HasParallelMove()) {
     compiler->parallel_move_resolver()->EmitNativeCode(parallel_move());
@@ -6854,7 +6854,7 @@ void GrowRegExpStackInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
   const Register result = locs()->out(0).reg();
   __ PushObject(Object::null_object());
   __ Push(typed_data);
-  compiler->GenerateRuntimeCall(Scanner::kNoSourcePos,  // No token position.
+  compiler->GenerateRuntimeCall(Token::kNoSourcePos,  // No token position.
                                 deopt_id(),
                                 kGrowRegExpStackRuntimeEntry,
                                 1,