Cast device revocation checking.

components/cast_certificate/cast_cert_validator.h

Index: components/cast_certificate/cast_cert_validator.h
diff --git a/components/cast_certificate/cast_cert_validator.h b/components/cast_certificate/cast_cert_validator.h
index 1c335ae6530b446a86bf234d00ac39f5774a0c7f..12a7a23e102c87b809a183e10d0728753f463bd3 100644
--- a/components/cast_certificate/cast_cert_validator.h
+++ b/components/cast_certificate/cast_cert_validator.h
@@ -76,6 +76,20 @@ bool VerifyDeviceCert(const std::vector<std::string>& certs,
                       std::unique_ptr<CertVerificationContext>* context,
                       CastDeviceCertPolicy* policy) WARN_UNUSED_RESULT;
 
+// Returns the DER-encoded certificate of the trust anchor with the name
+// provided.
+//
+// Input:
+//
+// * |name| is the DER-encoded name of the trust anchor's certificate
+//
+// Output:
+//
+// Returns the DER-encoded certificate of the trust anchor if the name of the
+// certificate matches the provided name. An empty string is returned if there
+// is no match.
+const std::string FindCastTrustAnchorByName(const std::string& name);
+
 // Exposed only for unit-tests, not for use in production code.
 // Production code would get a context from VerifyDeviceCert().
 //