Restructure outline shaker tests.

pkg/front_end/testing.json

 {
 "":"Copyright (c) 2016, the Dart project authors. Please see the AUTHORS file",
 "":"for details. All rights reserved. Use of this source code is governed by a",
 "":"BSD-style license that can be found in the LICENSE.md file.",
 
   "packages": "../../.packages",
 
   "suites": [
 
     {
@@ skipping 99 matching lines @@
     {
       "name": "shaker",
       "kind": "Chain",
       "source": "test/fasta/shaker_test.dart",
       "path": "testcases/shaker/",
       "status": "testcases/shaker.status",
       "pattern": [
         "\\.dart$"
       ],
       "exclude": [
-        "/shaker/lib/lib.dart"
+        "/shaker/lib/.*\\.dart$",
+        "/shaker/.*_lib\\.dart$"
       ]
     },
 
     {
       "name": "language",
       "kind": "Chain",
       "source": "test/fasta/sdk_test.dart",
       "path": "../../tests/language/",
       "status": "testcases/language.status",
       "process-multitests": true,
@@ skipping 80 matching lines @@
         "package:front_end/",
         "package:kernel/"
       ]
     },
 
     "exclude": [
       "^pkg/analysis_server/lib/src/analysis_server\\.dart"
     ]
   }
 }