Revert r113657 "win_release_OmitFramePointers=0 must explicitly pass /Oy-"
Revert r113657 "win_release_OmitFramePointers=0 must explicitly pass /Oy-"

We are suspecting this has side effects on official builds.

If so, this is a configuration error. Trying out to be sure.

TBR=timurrrr@chromium.org
BUG=
TEST=

Review URL: http://codereview.chromium.org/8898023

git-svn-id: de016e52bd170d2d4f2344f9bf92d50478b649e0@114251 0039d316-1c4b-4281-b951-d872f2087c98

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