Get rid of unused STRING_ADD_ERECT_FRAME flag.

R=svenpanne@chromium.org

Review URL: https://codereview.chromium.org/39803002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@17373 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Revert "Fix shared library build after r17368." and "Add performance.now() to the d8 shell.".

This reverts commit r17372 and r17368 for breaking the shared
library build.

TBR=hpayer@chromium.org

Review URL: https://codereview.chromium.org/40043002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@17374 ce2b1a6d-e550-0410-aec6-3dcde31c8c00