Add Resolution and Parsing interfaces for computeType, ensureResolved and parseNode.

pkg/compiler/lib/src/ssa/nodes.dart

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 part of ssa;
 
 abstract class HVisitor<R> {
   R visitAdd(HAdd node);
   R visitAwait(HAwait node);
   R visitBitAnd(HBitAnd node);
@@ skipping 1294 matching lines @@
     HInstruction current = this.next;
     while (current != null) {
       if (current == other) return true;
       current = current.next;
     }
     return false;
   }
 
   HInstruction convertType(Compiler compiler, DartType type, int kind) {
     if (type == null) return this;
-    type = type.unalias(compiler);
+    type = type.unalias(compiler.resolution);
     // Only the builder knows how to create [HTypeConversion]
     // instructions with generics. It has the generic type context
     // available.
     assert(type.kind != TypeKind.TYPE_VARIABLE);
     assert(type.treatAsRaw || type.isFunctionType);
     if (type.isDynamic) return this;
     // The type element is either a class or the void element.
     Element element = type.element;
     if (identical(element, compiler.objectClass)) return this;
     JavaScriptBackend backend = compiler.backend;
@@ skipping 2001 matching lines @@
 class HDynamicType extends HRuntimeType {
   HDynamicType(DynamicType dartType, TypeMask instructionType)
       : super(const <HInstruction>[], dartType, instructionType);
 
   accept(HVisitor visitor) => visitor.visitDynamicType(this);
 
   int typeCode() => HInstruction.DYNAMIC_TYPE_TYPECODE;
 
   bool typeEquals(HInstruction other) => other is HDynamicType;
 }