Fix a test to work with the new task model

pkg/analyzer/test/generated/resolver_test.dart

Index: pkg/analyzer/test/generated/resolver_test.dart
diff --git a/pkg/analyzer/test/generated/resolver_test.dart b/pkg/analyzer/test/generated/resolver_test.dart
index 72bfa95ccb7dbb4698cd8bbfc7eddb51555788d2..6583ce6c1ef91b8a93bf2770215a0507486fe6fc 100644
--- a/pkg/analyzer/test/generated/resolver_test.dart
+++ b/pkg/analyzer/test/generated/resolver_test.dart
@@ -9167,7 +9167,7 @@ main() {
     LibraryElement library = resolve(source);
     expect(library, isNotNull);
     CompilationUnit unit =
-        analysisContext.getResolvedCompilationUnit(source, library);
+        analysisContext.resolveCompilationUnit(source, library);
     expect(unit, isNotNull);
     List<bool> found = [false];
     List<CaughtException> thrownException = new List<CaughtException>(1);