Eliminate phase parameter in constructors

runtime/vm/parser.h

Index: runtime/vm/parser.h
diff --git a/runtime/vm/parser.h b/runtime/vm/parser.h
index 03333d5aff486c57a2af6d0f281be6bd9c68d9aa..1be0f50598e4b60b05903ef2030e691d5a0a61bb 100644
--- a/runtime/vm/parser.h
+++ b/runtime/vm/parser.h
@@ -484,7 +484,6 @@ class Parser : public ValueObject {
       const Class& cls,
       intptr_t supercall_pos,
       LocalVariable* receiver,
-      AstNode* phase_parameter,
       ArgumentListNode* forwarding_args);
   StaticCallNode* ParseSuperInitializer(
       const Class& cls,
@@ -585,7 +584,6 @@ class Parser : public ValueObject {
   void AddAsyncClosureVariables();
   void AddAsyncGeneratorVariables();
 
-  LocalVariable* LookupPhaseParameter();
   LocalVariable* LookupReceiver(LocalScope* from_scope, bool test_only);
   LocalVariable* LookupTypeArgumentsParameter(LocalScope* from_scope,
                                               bool test_only);