Correctly resolve package parts.

pkg/front_end/lib/src/fasta/translate_uri.dart

Index: pkg/front_end/lib/src/fasta/translate_uri.dart
diff --git a/pkg/front_end/lib/src/fasta/translate_uri.dart b/pkg/front_end/lib/src/fasta/translate_uri.dart
index c766ffa4bf5cc94c67698d03d528742478a88617..131fdd65f12a7de1a74d735a4585eca97e197ee2 100644
--- a/pkg/front_end/lib/src/fasta/translate_uri.dart
+++ b/pkg/front_end/lib/src/fasta/translate_uri.dart
@@ -67,6 +67,10 @@ class TranslateUri {
       "web_gl": sdk.resolve("lib/web_gl/dartium/web_gl_dartium.dart"),
       "web_sql": sdk.resolve("lib/web_sql/dartium/web_sql_dartium.dart"),
       "_internal": sdk.resolve("lib/internal/internal.dart"),
+      "profiler": sdk.resolve("lib/profiler/profiler.dart"),
+      "vmservice_io": sdk.resolve("lib/vmservice_io/vmservice_io.dart"),
+      "_vmservice": sdk.resolve("lib/vmservice/vmservice.dart"),
+      "_builtin": sdk.resolve("lib/_builtin/_builtin.dart"),
     };
     uri ??= Uri.base.resolve(".packages");
     File file = new File.fromUri(uri);