Revert "[BACKPORT] A patch backported from chromium upstream"

This reverts commit f8c3db196b6ec0e3b72f9d7143f98f34db514ba0.
Revert "[Android] Use the Chromium TLS for thread local storage allocation"

This reverts commit 2212a14e46a2c289b3e3dbe19f940343b9f87d53.
Merge pull request #109 from hmin/revert

Revert PR#107