This is the second code drop for the white-box api reference
implementation and tests. This corrects the errors in the license
white-box reference implementation and implements the remaining
test cases.
It should be noted that there is one test case missing, the test case
for handling ChromeOS's unique policy settings.
In order to make the tests easier to create and read, a license
builder class was created and golden content and keys were wrapped in
their own classes.
How key errors are communicated was changed in the API.
WB_RESULT_NO_SUCH_KEY and WB_RESULT_WRONG_KEY_TYPE were merged into
WB_RESULT_KEY_UNAVAILABLE.
This is the initial code drop of the reference implementation and
test cases for the Widevine Whitebox API.
In this drop, the full reference implementation for the AEAD
white-box is provided and all test cases verifying the top-level
behave have are enabled. Since the implementations can vary so much
the testing is mostly left to verifying the return codes for specific
parameter conditions.
A full reference implementation for the license white-box is provided,
however not all tests are implemented or enabled. A number of tests
have been disabled as they required a loaded license and test licenses
are still being worked on.
The two license white-box API functions that are the further from
competition are ProcessLicenseResponse() and MaskedDecryt().
ProcessLicenseResponse() is still being worked on and MaskedDecrypt()
is waiting on Decrypt() to be fully functional.
Most tests focus on verifying return code for specific parameter
conditions, but as test licenses are created, tests looking to test
the internal behaviour of license management will be added to
ProcessLicenseResponse(), Decrypt(), and MaskedDecrypt().
