1. Figure out the modified libraries from the specifeid kernel file during

pkg/front_end/test/src/incremental/hot_reload_e2e_test.dart

 // Copyright (c) 2017, 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 file.
 
 /// Integration test that runs the incremental compiler, runs the compiled
 /// program, incrementally rebuild portions of the app, and triggers a hot
 /// reload on the running program.
 library front_end.incremental.hot_reload_e2e_test;
 
 import 'dart:async';
@@ skipping 118 matching lines @@
 
   test('reload after non-leaf library modification', () async {
     await startProgram(1);
     expect(await lines[1], "part1 part2");
 
     writeFile(fs, 'a.dart', sourceA.replaceAll("part2", "part4"));
     await rebuild(compiler, outputUri);
     await hotReload();
     await programIsDone;
     expect(await lines[2], "part1 part4");
-  }, skip: true /* VM crashes on reload */);
+  });
 
   test('reload after whole program modification', () async {
     await startProgram(1);
     expect(await lines[1], "part1 part2");
 
     writeFile(fs, 'b.dart', sourceB.replaceAll("part1", "part5"));
     writeFile(fs, 'a.dart', sourceA.replaceAll("part2", "part6"));
     await rebuild(compiler, outputUri);
     await hotReload();
     await programIsDone;
@@ skipping 91 matching lines @@
 
 f() => "$line part2";
 ''';
 
 const sourceB = r'''
 get line => "part1";
 ''';
 
 RegExp observatoryPortRegExp =
     new RegExp("Observatory listening on http://127.0.0.1:\([0-9]*\)/");