Source positions for constructors and lots of async machinery

runtime/vm/object_test.cc

Index: runtime/vm/object_test.cc
diff --git a/runtime/vm/object_test.cc b/runtime/vm/object_test.cc
index 422121e4be080bbeb920eb8dc1cea6501d0e4172..5484a7b5d19896244d0522698f25c7d5c4fde419 100644
--- a/runtime/vm/object_test.cc
+++ b/runtime/vm/object_test.cc
@@ -29,7 +29,7 @@ static RawLibrary* CreateDummyLibrary(const String& library_name) {
 static RawClass* CreateDummyClass(const String& class_name,
                                   const Script& script) {
   const Class& cls = Class::Handle(
-      Class::New(class_name, script, Scanner::kNoSourcePos));
+      Class::New(class_name, script, Token::kNoSourcePos));
   cls.set_is_synthesized_class();  // Dummy class for testing.
   return cls.raw();
 }
@@ -2537,17 +2537,17 @@ TEST_CASE(ContextScope) {
   const Type& dynamic_type = Type::ZoneHandle(Type::DynamicType());
   const String& a = String::ZoneHandle(Symbols::New("a"));
   LocalVariable* var_a =
-      new LocalVariable(Scanner::kNoSourcePos, a, dynamic_type);
+      new LocalVariable(Token::kNoSourcePos, a, dynamic_type);
   parent_scope->AddVariable(var_a);
 
   const String& b = String::ZoneHandle(Symbols::New("b"));
   LocalVariable* var_b =
-      new LocalVariable(Scanner::kNoSourcePos, b, dynamic_type);
+      new LocalVariable(Token::kNoSourcePos, b, dynamic_type);
   local_scope->AddVariable(var_b);
 
   const String& c = String::ZoneHandle(Symbols::New("c"));
   LocalVariable* var_c =
-      new LocalVariable(Scanner::kNoSourcePos, c, dynamic_type);
+      new LocalVariable(Token::kNoSourcePos, c, dynamic_type);
   parent_scope->AddVariable(var_c);
 
   bool test_only = false;  // Please, insert alias.