(This is a merge of http://go/wvgerrit/14082)
Previously, the CryptoFactory had special behavior to defer creation
to Widevine Classic if no session ID was provided. This functionality
has been deprecated, as MediaCodec Mode is no longer supported.
This is necessary as part of supporting the new API for session ID
changes because the expectation is that it is now legal to initialize
a modular CryptoPlugin without a session ID.
Bug: 19570317
Change-Id: Iad0cd01b6a8d2e66c94c5f53a8a60f5787bc02f8
0540770280