Remove references to deprecated code

pkg/analyzer_cli/lib/src/driver.dart

Index: pkg/analyzer_cli/lib/src/driver.dart
diff --git a/pkg/analyzer_cli/lib/src/driver.dart b/pkg/analyzer_cli/lib/src/driver.dart
index e0c1eea5b4ccbaff496edf1e2ba42620f426046b..b51a67eff59d80a88e7fe15ed84dab71243fe5c0 100644
--- a/pkg/analyzer_cli/lib/src/driver.dart
+++ b/pkg/analyzer_cli/lib/src/driver.dart
@@ -25,7 +25,6 @@ import 'package:analyzer/src/generated/engine.dart';
 import 'package:analyzer/src/generated/error.dart';
 import 'package:analyzer/src/generated/interner.dart';
 import 'package:analyzer/src/generated/java_engine.dart';
-import 'package:analyzer/src/generated/java_io.dart';
 import 'package:analyzer/src/generated/sdk.dart';
 import 'package:analyzer/src/generated/source.dart';
 import 'package:analyzer/src/generated/source_io.dart';
@@ -366,8 +365,10 @@ class Driver implements CommandLineStarter {
     UriResolver packageUriResolver;
 
     if (options.packageRootPath != null) {
-      JavaFile packageDirectory = new JavaFile(options.packageRootPath);
-      packageUriResolver = new PackageUriResolver([packageDirectory]);
+      ContextBuilder builder = new ContextBuilder(resourceProvider, null, null);
+      builder.defaultPackagesDirectoryPath = options.packageRootPath;
+      packageUriResolver = new PackageMapUriResolver(resourceProvider,
+          builder.convertPackagesToMap(builder.createPackageMap('')));
     } else if (options.packageConfigPath == null) {
       // TODO(pq): remove?
       if (packageInfo.packageMap == null) {