Improve tests for refactoring exceptions. Catch initial exceptions.

R=brianwilkerson@google.com
BUG=

Review URL: https://codereview.chromium.org//816133002

git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge@42574 260f80e4-7a28-3924-810f-c04153c831b5
Builds 32-bit arm and intel for Android using gcc 4.9 against L-release.

R=koda@google.com

Review URL: https://codereview.chromium.org//833663002

git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge@42575 260f80e4-7a28-3924-810f-c04153c831b5