Put TCMalloc cleanup near the end of destructor list
Put TCMalloc cleanup near the end of destructor list

Try to make sure that the destructor at thread termination
for TCMalloc is called later than most any other
destructors. If other destructors are called later,
and if they use malloc, then TCMalloc will start a new
instance, and never cleanup :-(

r=rvargas
BUG=103209
Review URL: http://codereview.chromium.org/8550005

git-svn-id: de016e52bd170d2d4f2344f9bf92d50478b649e0@110987 0039d316-1c4b-4281-b951-d872f2087c98

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