Removing valgrind suppression for bug 76370.
Removing valgrind suppression for bug 76370.

In addition to being unable to repro locally, the stack trace has been incorrect for a while and there are no reports from linux/mac valgrind bots.

BUG=76370
TBR=timurrr

Review URL: http://codereview.chromium.org/8923018

git-svn-id: de016e52bd170d2d4f2344f9bf92d50478b649e0@114130 0039d316-1c4b-4281-b951-d872f2087c98

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