EME v0.1: Report defaultURL in KeyMessage.

webkit/media/crypto/ppapi/clear_key_cdm.cc

Index: webkit/media/crypto/ppapi/clear_key_cdm.cc
diff --git a/webkit/media/crypto/ppapi/clear_key_cdm.cc b/webkit/media/crypto/ppapi/clear_key_cdm.cc
index e6dbd8a972e79409a18bcf14db47e0a5264bde9f..924b62bed079fc9afc580110c30959edb47bc2d3 100644
--- a/webkit/media/crypto/ppapi/clear_key_cdm.cc
+++ b/webkit/media/crypto/ppapi/clear_key_cdm.cc
@@ -175,6 +175,7 @@ void ClearKeyCdm::Client::KeyMessage(const std::string& key_system,
   status_ = kKeyMessage;
   session_id_ = session_id;
   key_message_ = message;
+  default_url_ = default_url;
 }
 
 void ClearKeyCdm::Client::NeedKey(const std::string& key_system,
@@ -271,10 +272,14 @@ void ClearKeyCdm::TimerExpired(void* context) {
           next_heartbeat_message_ :
           "ERROR: Invalid timer context found!";
 
+  // This URL is only used for testing the code path for defaultURL.
+  // There is no service at this URL, so applications should ignore it.
+  const char url[] = "http://test.externalclearkey.chromium.org";
+
   host_->SendKeyMessage(
       heartbeat_session_id_.data(), heartbeat_session_id_.size(),
       heartbeat_message.data(), heartbeat_message.size(),
-      NULL, 0);
+      url, arraysize(url) - 1);
 
   ScheduleNextHeartBeat();
 }