[ Merge of http://go/wvgerrit/25781 ]
The security level (software/hardware, decryption/decode)
in the policy that specified how the key was to be used was
not being respected for L3. Playback would either continue or
a vendor specific error would be thrown.
If the device cannot use the key as permitted by the policy
CryptoException#ERROR_INSUFFICIENT_OUTPUT_PROTECTION will be thrown.
Test: Verified by WV unit+integration tests.
Verified by WidevineDashPolicyTests
Verified by WidevineDashPolicyTests#testL3SoftwareSecureDecoderRequired,
testL3HardwareSecureCryptoRequired, testL3HardwareSecureDecodeRequired,
testL3SecureVideoPathRequired.
b/31913737
b/31913439
Change-Id: Ibfc7f3dd6fc7264e8cf9b0d33f6f8d619eed6c00