Update hardcoded default content_id and provider to match the test CAS content we have setup in Staging and UAT.

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=226935596

example/constants.h

@@ -14,8 +14,8 @@
 namespace widevine {
 namespace cas {
 
-const char kDefaultContentId[] = "21140844";
-const char kDefaultProvider[] = "widevine";
+const char kDefaultContentId[] = "CasTsFake";
+const char kDefaultProvider[] = "widevine_test";
 // Size of this IV needs to match ecm_init_params.content_iv_size.
 const char kDefaultContentIv8Bytes[] = {'\x01', '\x01', '\x01', '\x01',
                                         '\x01', '\x01', '\x01', '\x01'};