Add support for SDK outline in IKG.

pkg/front_end/test/src/base/processed_options_test.dart

Index: pkg/front_end/test/src/base/processed_options_test.dart
diff --git a/pkg/front_end/test/src/base/processed_options_test.dart b/pkg/front_end/test/src/base/processed_options_test.dart
index 917576f515d56240e7d8817adb9fe9aa72c6c708..71a18d697ad0417b6539afd707f61bc832bb37cc 100644
--- a/pkg/front_end/test/src/base/processed_options_test.dart
+++ b/pkg/front_end/test/src/base/processed_options_test.dart
@@ -7,13 +7,13 @@ import 'dart:async';
 import 'package:front_end/compiler_options.dart';
 import 'package:front_end/memory_file_system.dart';
 import 'package:front_end/src/base/processed_options.dart';
-import 'package:front_end/src/fasta/fasta.dart' show ByteSink;
 import 'package:front_end/src/fasta/compiler_context.dart';
+import 'package:front_end/src/fasta/fasta.dart' show ByteSink;
 import 'package:front_end/src/fasta/fasta_codes.dart';
 import 'package:kernel/binary/ast_to_binary.dart' show BinaryPrinter;
-import 'package:kernel/kernel.dart' show Program, Library, CanonicalName;
+import 'package:kernel/kernel.dart'
+    show CanonicalName, Library, Program, loadProgramFromBytes;
 import 'package:package_config/packages.dart' show Packages;
-
 import 'package:test/test.dart';
 import 'package:test_reflective_loader/test_reflective_loader.dart';
 
@@ -66,6 +66,24 @@ class ProcessedOptionsTest {
     expect(processed.fileSystem, same(fileSystem));
   }
 
+  test_getSdkSummaryBytes_summaryLocationProvided() async {
+    var uri = Uri.parse('file:///sdkSummary');
+
+    writeMockSummaryTo(uri);
+
+    var raw = new CompilerOptions()
+      ..fileSystem = fileSystem
+      ..sdkSummary = uri;
+    var processed = new ProcessedOptions(raw);
+
+    var bytes = await processed.loadSdkSummaryBytes();
+    expect(bytes, isNotEmpty);
+
+    var sdkSummary = loadProgramFromBytes(bytes);
+    expect(sdkSummary.libraries.single.importUri,
+        mockSummary.libraries.single.importUri);
+  }
+
   test_getSdkSummary_summaryLocationProvided() async {
     var uri = Uri.parse('file:///sdkSummary');
     writeMockSummaryTo(uri);