Switch FE to use the libraries.json format.

pkg/front_end/test/src/incremental/kernel_driver_test.dart

Index: pkg/front_end/test/src/incremental/kernel_driver_test.dart
diff --git a/pkg/front_end/test/src/incremental/kernel_driver_test.dart b/pkg/front_end/test/src/incremental/kernel_driver_test.dart
index 193a84d95bcdb8f7fb827f2307456c4762eace9b..67f3e088c9970a056c3b2aae7ee501fd66266f0e 100644
--- a/pkg/front_end/test/src/incremental/kernel_driver_test.dart
+++ b/pkg/front_end/test/src/incremental/kernel_driver_test.dart
@@ -650,9 +650,8 @@ import 'b.dart';
   /// Create new [KernelDriver] instance and put it into the [driver] field.
   void _createDriver(
       {Map<String, Uri> packages, KernelDriverFileAddedFn fileAddedFn}) {
-    Map<String, Uri> dartLibraries = createSdkFiles(fileSystem);
-    var uriTranslator =
-        new UriTranslatorImpl(dartLibraries, {}, new MapPackages(packages));
+    var uriTranslator = new UriTranslatorImpl(
+        createSdkFiles(fileSystem), new MapPackages(packages));
     driver = new KernelDriver(
         new ProcessedOptions(new CompilerOptions()
           ..logger = new PerformanceLog(null)