thread isolate for files starting with 'b' and 'c'

R=svenpanne@chromium.org
BUG=

Review URL: https://codereview.chromium.org/23729006

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@16489 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
remove Isolate::Current from most files starting with 'd' and 'e'

R=svenpanne@chromium.org
BUG=

Review URL: https://codereview.chromium.org/23606012

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@16490 ce2b1a6d-e550-0410-aec6-3dcde31c8c00