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This is not needed anymore after I changed the current context to always reside in a local variable. Further simplifications and cleanup in the debugger. This also fixes a bad memory retention problem with non-capturing closures. BUG=dartbug.com/18886 TEST=tests/language/vm/closure_memory_retention_test.dart R=hausner@google.com Review URL: https://codereview.chromium.org//695483003 git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@41433 260f80e4-7a28-3924-810f-c04153c831b5