One less lock.
One less lock.

As of http://codereview.chromium.org/8476013/, InitializeGLBindings is only called from one thread in the browser, so this lock is unnecessary.

R=zmo@chromium.org
BUG=none
TEST=none

Review URL: http://codereview.chromium.org/8527026

git-svn-id: de016e52bd170d2d4f2344f9bf92d50478b649e0@111145 0039d316-1c4b-4281-b951-d872f2087c98

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