Enable WebRtcBrowserTest.CanSetupCallAndSendDtmf on all platforms except WIN DR Memory.
Enable WebRtcBrowserTest.CanSetupCallAndSendDtmf on all platforms except WIN DR Memory.

BUG=545740

Review URL: https://codereview.chromium.org/1434663002

Cr-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#358655}

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