Merge r7549 "Fix auto suspension of the sampler thread" to trunk.

BUG=http://crbug.com/78267
Review URL: http://codereview.chromium.org/6810029

git-svn-id: http://v8.googlecode.com/svn/trunk@7550 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2 files changed