fix for 1.12.0-dev SDK and 0.25.1 analyzer breaking changes

lib/src/checker/resolver.dart

Index: lib/src/checker/resolver.dart
diff --git a/lib/src/checker/resolver.dart b/lib/src/checker/resolver.dart
index 8df623c248cc9f5b2789030420577fd23a3818b8..df7e144243d09491ecdcb574da097ac63f48fe33 100644
--- a/lib/src/checker/resolver.dart
+++ b/lib/src/checker/resolver.dart
@@ -49,8 +49,9 @@ class LibraryResolverWithInference extends LibraryResolver {
   void _resolveVariableReferences() {
     for (Library library in resolvedLibraries) {
       for (Source source in library.compilationUnitSources) {
-        library.getAST(source).accept(
-            new VariableResolverVisitor.con1(library, source, typeProvider));
+        library.getAST(source).accept(new VariableResolverVisitor(
+            library.libraryElement, source, typeProvider, library.errorListener,
+            nameScope: library.libraryScope));
       }
     }
   }
@@ -358,7 +359,10 @@ class RestrictedResolverVisitor extends ResolverVisitor {
   RestrictedResolverVisitor(Library library, Source source,
       TypeProvider typeProvider, StrongModeOptions options)
       : _typeProvider = typeProvider,
-        super.con1(library, source, typeProvider,
+        super(
+            library.libraryElement, source, typeProvider, library.errorListener,
+            nameScope: library.libraryScope,
+            inheritanceManager: library.inheritanceManager,
             typeAnalyzerFactory: RestrictedStaticTypeAnalyzer.constructor);
 
   reanalyzeInitializer(VariableDeclaration variable) {