Firefox is really slow

R=ricow@google.com

Review URL: https://codereview.chromium.org//650873002

git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge@41073 260f80e4-7a28-3924-810f-c04153c831b5
Try Dart doesn’t run on Dartium, but its test do.

R=johnniwinther@google.com

Review URL: https://codereview.chromium.org//645623005

git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge@41074 260f80e4-7a28-3924-810f-c04153c831b5
Web tests don't run on command line

R=ricow@google.com

Review URL: https://codereview.chromium.org//650133002

git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge@41075 260f80e4-7a28-3924-810f-c04153c831b5
Perform incremental compilation, and run the updated program.

R=johnniwinther@google.com

Review URL: https://codereview.chromium.org//641143002

git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge@41076 260f80e4-7a28-3924-810f-c04153c831b5