media: Update getStatusForPolicy() minHdcpVersion string format

The explainer has been updated to formalize the minHdcpVersion string
format to be "1.0", "1.1" etc.

This CL updates Chromium's implementation to use the new string format
instead of the old format, e.g. "hdcp-1.0", "hdcp-1.1", etc.

Bug: 709348
Test: Existing tests updated.
Change-Id: I4fe1061077228564fd6931d9900cfd19553dcf09
Reviewed-on: https://chromium-review.googlesource.com/c/1338576
Reviewed-by: John Rummell <jrummell@chromium.org>
Commit-Queue: Xiaohan Wang <xhwang@chromium.org>
Cr-Commit-Position: refs/heads/master@{#608979}
3 files changed