Remove final references to PackageUriResolver

pkg/analyzer/example/resolver_driver.dart

Index: pkg/analyzer/example/resolver_driver.dart
diff --git a/pkg/analyzer/example/resolver_driver.dart b/pkg/analyzer/example/resolver_driver.dart
index 73c5733dd8a30cc4c98892f7fac0fcd99db57dbc..cf68857d2283749a3975f2b7dc466745a5bf1b1f 100755
--- a/pkg/analyzer/example/resolver_driver.dart
+++ b/pkg/analyzer/example/resolver_driver.dart
@@ -10,9 +10,10 @@ import 'package:analyzer/dart/ast/visitor.dart';
 import 'package:analyzer/dart/element/element.dart';
 import 'package:analyzer/file_system/file_system.dart' hide File;
 import 'package:analyzer/file_system/physical_file_system.dart';
+import 'package:analyzer/source/package_map_resolver.dart';
+import 'package:analyzer/src/context/builder.dart';
 import 'package:analyzer/src/dart/sdk/sdk.dart';
 import 'package:analyzer/src/generated/engine.dart';
-import 'package:analyzer/src/generated/java_io.dart';
 import 'package:analyzer/src/generated/sdk.dart' show DartSdk;
 import 'package:analyzer/src/generated/source.dart';
 import 'package:analyzer/src/generated/source_io.dart';
@@ -41,8 +42,9 @@ void main(List<String> args) {
   ];
 
   if (packageRoot != null) {
-    var packageDirectory = new JavaFile(packageRoot);
-    resolvers.add(new PackageUriResolver([packageDirectory]));
+    ContextBuilder builder = new ContextBuilder(resourceProvider, null, null);
+    resolvers.add(new PackageMapUriResolver(resourceProvider,
+        builder.convertPackagesToMap(builder.createPackageMap(packageRoot))));

[scheglov, 2016/09/07 19:11:39]

We repeat this code in several clients.
Should we have a helper (e.g. in ContextBuilder) that does this?

[Brian Wilkerson, 2016/09/07 20:03:03]

Eventually clients should be able to use an even higher level API in
ContextBuilder, so I'm not sure it's worth adding something that should only be
used temporarily. I could be persuaded otherwise, though.

   }
 
   AnalysisContext context = AnalysisEngine.instance.createAnalysisContext()