Enable tracking of objects by default
This is a reland of accumulated patches including CLs
8414036, 8425010, 8425013, 8424013.
It fully enables tracking of objects, as seen in about:tracking
in teh release build.
The problem this had in its initaial landing centered on
Mac instability in base_unittest. We were encountering crash
on exit of the tests, with a stack dump involving pthreads.
r=rtenneti
BUG=101856
Review URL: http://codereview.chromium.org/8429009
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@108026 0039d316-1c4b-4281-b951-d872f2087c98
CrOS-Libchrome-Original-Commit: b2a9bbd42c6d5215c43067582fa2bca3cfc5e20e
12 files changed