65e7b9f980
- Move signal blocking out of dart.cc and isolate.cc and into profiler.cc. - Nest scope objects explicitly. - Add missing signal block in ProfilerManager::ShutdownIsolateForProfiling. R=iposva@google.com Review URL: https://codereview.chromium.org//83093004 git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@30602 260f80e4-7a28-3924-810f-c04153c831b5