When using SDK outline, transplant its names into the name root.

pkg/front_end/lib/src/incremental/kernel_driver.dart

Index: pkg/front_end/lib/src/incremental/kernel_driver.dart
diff --git a/pkg/front_end/lib/src/incremental/kernel_driver.dart b/pkg/front_end/lib/src/incremental/kernel_driver.dart
index 4e029a276c16c997fbba6f69ce541d100c7b98c9..a29d4f4755ea507c87e7359104e4c4870fc78b0b 100644
--- a/pkg/front_end/lib/src/incremental/kernel_driver.dart
+++ b/pkg/front_end/lib/src/incremental/kernel_driver.dart
@@ -8,6 +8,7 @@ import 'package:front_end/file_system.dart';
 import 'package:front_end/src/base/api_signature.dart';
 import 'package:front_end/src/base/performace_logger.dart';
 import 'package:front_end/src/base/processed_options.dart';
+import 'package:front_end/src/byte_store/byte_store.dart';
 import 'package:front_end/src/fasta/compiler_context.dart';
 import 'package:front_end/src/fasta/dill/dill_library_builder.dart';
 import 'package:front_end/src/fasta/dill/dill_target.dart';
@@ -15,7 +16,6 @@ import 'package:front_end/src/fasta/kernel/kernel_target.dart';
 import 'package:front_end/src/fasta/kernel/utils.dart';
 import 'package:front_end/src/fasta/ticker.dart';
 import 'package:front_end/src/fasta/uri_translator.dart';
-import 'package:front_end/src/byte_store/byte_store.dart';
 import 'package:front_end/src/incremental/file_state.dart';
 import 'package:kernel/binary/ast_from_binary.dart';
 import 'package:kernel/core_types.dart';
@@ -131,9 +131,11 @@ class KernelDriver {
     return await runWithFrontEndContext('Compute delta', () async {
       await _refreshInvalidatedFiles();
 
+      CanonicalName nameRoot = new CanonicalName.root();
+
       // Load the SDK outline before building the graph, so that the file
       // system state is configured to skip SDK libraries.
-      await _loadSdkOutline();
+      await _loadSdkOutline(nameRoot);
 
       // Ensure that the graph starting at the entry point is ready.
       FileState entryLibrary =
@@ -147,7 +149,6 @@ class KernelDriver {
         return cycles;
       });
 
-      CanonicalName nameRoot = new CanonicalName.root();
       DillTarget dillTarget = new DillTarget(
           new Ticker(isVerbose: false), _uriTranslator, _options.target);
 
@@ -359,7 +360,7 @@ class KernelDriver {
 
   /// Load the SDK outline if its bytes are provided, and configure the file
   /// system state to skip SDK library files.
-  Future<Null> _loadSdkOutline() async {
+  Future<Null> _loadSdkOutline(CanonicalName nameRoot) async {
     if (_sdkOutlineBytes != null) {
       if (_sdkOutline == null) {
         await _logger.runAsync('Load SDK outline from bytes.', () async {
@@ -371,6 +372,9 @@ class KernelDriver {
           }
         });
       }
+      for (var sdkLibrary in _sdkOutline.libraries) {
+        nameRoot.transplantChild(sdkLibrary.canonicalName);
+      }
     }
   }