Check for FLAG_enable_liveedit when using Live Edit.

R=peter.rybin@gmail.com
BUG=

Review URL: https://chromiumcodereview.appspot.com/12041008

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@13457 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Migrate ArrayLength (Keyed|Named)LoadIC to CodeStub

Review URL: https://chromiumcodereview.appspot.com/11938013

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@13458 ce2b1a6d-e550-0410-aec6-3dcde31c8c00