Merged r11225 into trunk branch.

Ensure default isolate is present in Add/RemoveCallCompletedCallback.

R=ulan@chromium.org
TEST=ui_tests don't crash in Chrome

Review URL: https://chromiumcodereview.appspot.com/9960010

git-svn-id: http://v8.googlecode.com/svn/trunk@11227 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2 files changed