Correct a file path for media_cas_packager_sdk_files.

Currently getting Kokoro error
ERROR: /var/lib/jenkins/workspace/Media_CAS_Packager_SDK/BUILD:13:1: no such package 'media_cas_packager_sdk/example': BUILD file not found on package path and referenced by '//:media_cas_packager_sdk_files'.
Example: []

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=217577606

example/test_simulcrypt_messages.h

@@ -0,0 +1,166 @@
+////////////////////////////////////////////////////////////////////////////////
+// Copyright 2018 Google LLC.
+//
+// This software is licensed under the terms defined in the Widevine Master
+// License Agreement. For a copy of this agreement, please contact
+// widevine-licensing@google.com.
+////////////////////////////////////////////////////////////////////////////////
+
+// Example Simulcrypt messages used in unit tests and example client.
+
+#ifndef MEDIA_CAS_PACKAGER_SDK_EXAMPLE_TEST_SIMULCRYPT_MESSAGES_H_
+#define MEDIA_CAS_PACKAGER_SDK_EXAMPLE_TEST_SIMULCRYPT_MESSAGES_H_
+
+namespace widevine {
+namespace cas {
+
+const char kTestEcmgStreamSetupMessage[] = {  // protocol_version
+    '\x01',
+    // message_type - Stream_set-up
+    '\x01', '\x01',
+    // message_length
+    // 18 bytes below, 3 parameters 6 bytes each
+    '\x00', '\x12',
+    // parameter_type - ECM_channel_id
+    '\x00', '\x0e',
+    // parameter_length
+    '\x00', '\x02',
+    // parameter_value
+    '\x00', '\x01',
+    // parameter_type - ECM_stream_id
+    '\x00', '\x0f',
+    // parameter_length
+    '\x00', '\x02',
+    // parameter_value
+    '\x00', '\x02',
+    // parameter_type - nominal_CP_duration
+    '\x00', '\x10',
+    // parameter_length
+    '\x00', '\x02',
+    // parameter_value
+    '\x00', '\x03'};
+
+const char kTestEcmgCwProvisionMessageWithOneCw[] = {
+    // protocol_version
+    '\x01',
+    // message_type - CW_provision
+    '\x02', '\x01',
+    // message_length
+    // 64 bytes below, 3 * 6 + 8 + 10 + 1 * 22 + 6
+    '\x00', '\x40',
+    // parameter_type - ECM_channel_id
+    '\x00', '\x0e',
+    // parameter_length
+    '\x00', '\x02',
+    // parameter_value
+    '\x00', '\x01',
+    // parameter_type - ECM_stream_id
+    '\x00', '\x0f',
+    // parameter_length
+    '\x00', '\x02',
+    // parameter_value
+    '\x00', '\x02',
+    // parameter_type - CP_number
+    '\x00', '\x12',
+    // parameter_length
+    '\x00', '\x02',
+    // parameter_value
+    '\x00', '\xa1',
+    // parameter_type - access_criteria
+    '\x00', '\x0d',
+    // parameter_length
+    '\x00', '\x04',
+    // parameter_value
+    '\x00', '\x00', '\x00', '\x00',
+    // parameter_type - CW_encryption
+    '\x00', '\x18',
+    // parameter_length
+    '\x00', '\x06',
+    // parameter_value
+    '\x00', '\x00', '\x00', '\x00', '\x00', '\x00',
+    // parameter_type - CP_CW_combination
+    '\x00', '\x14',
+    // parameter_length - 2 + 16
+    '\x00', '\x12',
+    // parameter_value - CP then CW
+    // CP
+    '\x00', '\xa1',
+    // CW (16 bytes)
+    '\x11', '\x11', '\x11', '\x11', '\x11', '\x11', '\x11', '\x11', '\x11',
+    '\x11', '\x11', '\x11', '\x11', '\x11', '\x11', '\x11',
+    // parameter_type - CP_duration
+    '\x00', '\x13',
+    // parameter_length
+    '\x00', '\x02',
+    // parameter_value
+    '\x00', '\x0a'};
+
+const char kTestEcmgCwProvisionMessageWithTwoCw[] = {
+    // protocol_version
+    '\x01',
+    // message_type - CW_provision
+    '\x02', '\x01',
+    // message_length
+    // 86 bytes below, 3 * 6 + 8 + 10 + 2 * 22 + 6
+    '\x00', '\x56',
+    // parameter_type - ECM_channel_id
+    '\x00', '\x0e',
+    // parameter_length
+    '\x00', '\x02',
+    // parameter_value
+    '\x00', '\x01',
+    // parameter_type - ECM_stream_id
+    '\x00', '\x0f',
+    // parameter_length
+    '\x00', '\x02',
+    // parameter_value
+    '\x00', '\x02',
+    // parameter_type - CP_number
+    '\x00', '\x12',
+    // parameter_length
+    '\x00', '\x02',
+    // parameter_value
+    '\x00', '\xa1',
+    // parameter_type - access_criteria
+    '\x00', '\x0d',
+    // parameter_length
+    '\x00', '\x04',
+    // parameter_value
+    '\x00', '\x00', '\x00', '\x00',
+    // parameter_type - CW_encryption
+    '\x00', '\x18',
+    // parameter_length
+    '\x00', '\x06',
+    // parameter_value
+    '\x00', '\x00', '\x00', '\x00', '\x00', '\x00',
+    // parameter_type - CP_CW_combination
+    '\x00', '\x14',
+    // parameter_length - 2 + 16
+    '\x00', '\x12',
+    // parameter_value - CP then CW
+    // CP
+    '\x00', '\xa1',
+    // CW (16 bytes)
+    '\x11', '\x11', '\x11', '\x11', '\x11', '\x11', '\x11', '\x11', '\x11',
+    '\x11', '\x11', '\x11', '\x11', '\x11', '\x11', '\x11',
+    // parameter_type - CP_CW_combination
+    '\x00', '\x14',
+    // parameter_length - 2 + 16
+    '\x00', '\x12',
+    // parameter_value - CP then CW
+    // CP
+    '\x00', '\xa2',
+    // CW (16 bytes)
+    '\x22', '\x22', '\x22', '\x22', '\x22', '\x22', '\x22', '\x22', '\x22',
+    '\x22', '\x22', '\x22', '\x22', '\x22', '\x22', '\x22',
+    // parameter_type - CP_duration
+    '\x00', '\x13',
+    // parameter_length
+    '\x00', '\x02',
+    // parameter_value
+    '\x00', '\x0a'};
+
+}  // namespace cas
+}  // namespace widevine
+
+#endif  // MEDIA_CAS_PACKAGER_SDK_EXAMPLE_TEST_SIMULCRYPT_MESSAGES_H_