Move MediaKeys::Exception to CdmPromise::Exception

media/mojo/services/mojo_cdm_service.cc

Index: media/mojo/services/mojo_cdm_service.cc
diff --git a/media/mojo/services/mojo_cdm_service.cc b/media/mojo/services/mojo_cdm_service.cc
index 0d23993ace6fec5587e7be0e675e98c1ab6988b2..127f35c968d474226d865b02a6f5d0cf13ff9b61 100644
--- a/media/mojo/services/mojo_cdm_service.cc
+++ b/media/mojo/services/mojo_cdm_service.cc
@@ -181,7 +181,7 @@ void MojoCdmService::OnCdmCreated(const InitializeCallback& callback,
   // populated. See http://crbug.com/469366
   if (!cdm || !context_) {
     cdm_promise_result->success = false;
-    cdm_promise_result->exception = MediaKeys::Exception::NOT_SUPPORTED_ERROR;
+    cdm_promise_result->exception = CdmPromise::Exception::NOT_SUPPORTED_ERROR;
     cdm_promise_result->system_code = 0;
     cdm_promise_result->error_message = error_message;
     callback.Run(std::move(cdm_promise_result), 0, nullptr);