OEMCrypto Usage Tables

This CL adds usage tables to the OEMCrypto reference implementation
(mock) and unit tests.

There is also a new parameter called oem_crypto_require_usage_tables
that determines if the usage tables are required or not.  This is set
to true for Android and false for all other platforms.

This CL is most of OEMCrypto version 9 updates.

This CL is a copy of
https://widevine-internal-review.googlesource.com/#/c/9720
https://widevine-internal-review.googlesource.com/#/c/9874
https://widevine-internal-review.googlesource.com/#/c/9873

Change-Id: I78c4f7651306f9f79ba2260c3e04fb1eca7e20e3

libwvdrmengine/oemcrypto/mock/src/wvcrc32.h

@@ -1,18 +1,15 @@
-/*********************************************************************
- * wvcrc32.h
- *
- * (c) Copyright 2011-2012 Google, Inc.
- *
- * Compte CRC32 Checksum. Needed for verification of WV Keybox.
- *********************************************************************/
-
-#ifndef WV_CRC_32_H_
-#define WV_CRC_32_H_
+// Copyright 2013 Google Inc. All Rights Reserved.
+//
+// Compute CRC32 Checksum. Needed for verification of WV Keybox.
+//
+#ifndef WVOEC_MOCK_WVCRC32_H_
+#define WVOEC_MOCK_WVCRC32_H_
 
 #include <stdint.h>
 
 uint32_t wvcrc32(const uint8_t* p_begin, int i_count);
-uint32_t wvcrc32n(const uint8_t* p_begin, int i_count);  // Convert to network byte
-                                                   // order.
 
-#endif //  WV_CRC_32_H_
+// Convert to network byte order
+uint32_t wvcrc32n(const uint8_t* p_begin, int i_count);
+
+#endif // WVOEC_MOCK_WVCRC32_H_