Merge of CDM change: https://widevine-internal-review.googlesource.com/#/c/10691/ This prevents the provisioning session from being created unless the device needs provisioning. And then, after provisioning, it closes the session it had previously opened. b/15782159 CertificateProvisioning object keeps unused CryptoSession Change-Id: Ic52ed864fa47c7ba50b7ca4d9fea1e74930228e9