Encode URIs stored in unlinked summaries to make them Uri.parse() safe.

pkg/analyzer/test/src/dart/analysis/driver_test.dart

Index: pkg/analyzer/test/src/dart/analysis/driver_test.dart
diff --git a/pkg/analyzer/test/src/dart/analysis/driver_test.dart b/pkg/analyzer/test/src/dart/analysis/driver_test.dart
index 1010176270fb49f29dc820bff0f661c5cc3e6dbd..e5209eadda94c6d79f5942a4c727afcada7d552f 100644
--- a/pkg/analyzer/test/src/dart/analysis/driver_test.dart
+++ b/pkg/analyzer/test/src/dart/analysis/driver_test.dart
@@ -889,6 +889,23 @@ class C {}
     expect(a.name.staticElement, new isInstanceOf<FunctionElement>());
   }
 
+  test_getResult_invalidUri() async {
+    String content = r'''
+import 'package:aaa/a1.dart';
+import '[invalid uri]';
+
+export '[invalid uri]';
+export 'package:aaa/a2.dart';
+
+part 'a3.dart';
+part '[invalid uri]';
+''';
+    addTestFile(content);
+
+    AnalysisResult result = await driver.getResult(testFile);
+    expect(result.path, testFile);
+  }
+
   test_getResult_invalidUri_exports_dart() async {
     String content = r'''
 export 'dart:async';