Revert "Remove unused option in server API"

pkg/analysis_server/test/analysis_server_test.dart

Index: pkg/analysis_server/test/analysis_server_test.dart
diff --git a/pkg/analysis_server/test/analysis_server_test.dart b/pkg/analysis_server/test/analysis_server_test.dart
index b41486c43ada447eb6ec6fec6b3a9b74e8db80db..ed5056358079840d99fb2abad05137986cb91e07 100644
--- a/pkg/analysis_server/test/analysis_server_test.dart
+++ b/pkg/analysis_server/test/analysis_server_test.dart
@@ -41,6 +41,7 @@ class AnalysisServerTest {
   MockServerChannel channel;
   AnalysisServer server;
   MemoryResourceProvider resourceProvider;
+  MockPackageMapProvider packageMapProvider;
 
   /**
    * Verify that getAnalysisContextForSource returns the correct contexts even
@@ -137,9 +138,11 @@ import "../foo/foo.dart";
     channel = new MockServerChannel();
     resourceProvider = new MemoryResourceProvider();
     MockSdk sdk = new MockSdk(resourceProvider: resourceProvider);
+    packageMapProvider = new MockPackageMapProvider();
     server = new AnalysisServer(
         channel,
         resourceProvider,
+        packageMapProvider,
         null,
         plugin,
         new AnalysisServerOptions(),
@@ -538,8 +541,8 @@ analyzer:
 
   void _configureSourceFactory(AnalysisContext context) {
     var resourceUriResolver = new ResourceUriResolver(resourceProvider);
-    var packageUriResolver =
-        new PackageMapUriResolver(resourceProvider, <String, List<Folder>>{});
+    var packageUriResolver = new PackageMapUriResolver(
+        resourceProvider, packageMapProvider.packageMap);
     context.sourceFactory =
         new SourceFactory([packageUriResolver, resourceUriResolver]);
   }