Fix expiry time conversion in ContentDecryptorDelegate

media/cdm/ppapi/external_clear_key/clear_key_cdm.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "media/cdm/ppapi/external_clear_key/clear_key_cdm.h"
 
 #include <algorithm>
 #include <cstring>
 #include <sstream>
 #include <utility>
@@ skipping 402 matching lines @@
   std::unique_ptr<media::SimpleCdmPromise> promise(
       new media::CdmCallbackPromise<>(
           base::Bind(&ClearKeyCdm::OnPromiseResolved, base::Unretained(this),
                      promise_id),
           base::Bind(&ClearKeyCdm::OnPromiseFailed, base::Unretained(this),
                      promise_id)));
   decryptor_->UpdateSession(
       web_session_str, std::vector<uint8_t>(response, response + response_size),
       std::move(promise));
 
-  if (key_system_ == kExternalClearKeyRenewalKeySystem && !renewal_timer_set_) {
-    ScheduleNextRenewal();
-    renewal_timer_set_ = true;
+  // TODO(xhwang): Only schedule renewal and update expiration change when the
+  // promise is resolved.
+
+  cdm::Time expiration = 0.0;  // Never expires.
+
+  if (key_system_ == kExternalClearKeyRenewalKeySystem) {
+    // For renewal key system, set a non-zero expiration that is approximately
+    // 100 years after 01 January 1970 UTC.
+    expiration = 3153600000.0;  // 100 * 365 * 24 * 60 * 60;
+
+    if (!renewal_timer_set_) {
+      ScheduleNextRenewal();
+      renewal_timer_set_ = true;
+    }
   }
+
+  host_->OnExpirationChange(session_id, session_id_length, expiration);
 }
 
 void ClearKeyCdm::CloseSession(uint32_t promise_id,
                                const char* session_id,
                                uint32_t session_id_length) {
   DVLOG(1) << __func__;
   std::string web_session_str(session_id, session_id_length);
 
   // If closing the loadable session, use the actual session id generated.
   if (web_session_str == std::string(kLoadableSessionId))
@@ skipping 588 matching lines @@
                                challenge.data(), challenge.size());
 }
 
 void ClearKeyCdm::VerifyCdmHostTest() {
   // VerifyCdmHost() should have already been called and test result stored
   // in |g_verify_host_files_result|.
   OnUnitTestComplete(g_verify_host_files_result);
 }
 
 }  // namespace media