Fix analyzer tests.

pkg/analyzer/test/generated/gn_test.dart

Index: pkg/analyzer/test/generated/gn_test.dart
diff --git a/pkg/analyzer/test/generated/gn_test.dart b/pkg/analyzer/test/generated/gn_test.dart
index 7ceba285ba9e2af7c23d692604ef1d1602caa223..060285a8186bbaa6add41d78ee377e12937ac7c5 100644
--- a/pkg/analyzer/test/generated/gn_test.dart
+++ b/pkg/analyzer/test/generated/gn_test.dart
@@ -31,7 +31,7 @@ class GnPackageUriResolverTest extends _BaseTest {
     ]);
     provider.newFile(
         _p('/workspace/out/debug-x87_128/gen/dart.sources/flutter'),
-        '/workspace/a/source');
+        _p('/workspace/a/source'));
     _setUp();
     _assertResolve(
         'package:flutter/code.dart', '/workspace/a/source/code.dart');
@@ -46,7 +46,7 @@ class GnPackageUriResolverTest extends _BaseTest {
     ]);
     provider.newFile(
         _p('/workspace/out/debug-x87_128/gen/dart.sources/flutter'),
-        '/workspace/a/source');
+        _p('/workspace/a/source'));
     _setUp();
     expect(
         resolver.resolveAbsolute(Uri.parse('package:bogus/code.dart')), null);