Write end-of-block comments.

R=brianwilkerson@google.com
BUG=

Review URL: https://codereview.chromium.org//624403002

git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge@40912 260f80e4-7a28-3924-810f-c04153c831b5
Uncomment and clean up engine_test.dart

R=brianwilkerson@google.com
BUG=

Review URL: https://codereview.chromium.org//627133002

git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge@40913 260f80e4-7a28-3924-810f-c04153c831b5
Remove from AnalysisServer the 'test_' methods which now has non-test implementations.

R=brianwilkerson@google.com
BUG=

Review URL: https://codereview.chromium.org//629043002

git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge@40914 260f80e4-7a28-3924-810f-c04153c831b5
Make it easier to run engine tests

R=scheglov@google.com

Review URL: https://codereview.chromium.org//632553002

git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge@40915 260f80e4-7a28-3924-810f-c04153c831b5