Multiple Renewal Keys and Logging

In this code update we add a test to ensure that the White-box API
implementation handle seeing multiple renewal keys correctly. Since
there should be no more than one renewal key in a license response, upon
seeing a second renewal key, the implementation should return a
WB_RESULT_INVALID_PARAMETER code.

Due to changes in how Chrome manages CHECKS and DCHECKS, this code has
been updated to use the new headers.

crypto_utils/random_util.cc

@@ -8,7 +8,7 @@
 
 #include "crypto_utils/random_util.h"
 
-#include "base/logging.h"
+#include "base/check.h"
 #include "third_party/boringssl/src/include/openssl/rand.h"
 
 namespace widevine {