Merge "Exclude the default CDM from metrics history." into udc-dev

libwvdrmengine/cdm/src/wv_content_decryption_module.cpp

@@ -565,6 +565,10 @@ CdmResponseType WvContentDecryptionModule::GetCurrentMetricsInternal(
 void WvContentDecryptionModule::SaveMetrics(
     const CdmIdentifier& identifier, drm_metrics::WvCdmMetrics&& metrics) {
   if (saved_metrics_snapshots_ == nullptr) return;
+  // The DRM plugin opens and closes many CDMs using the default
+  // identifier.  These metrics are not needed when checking the
+  // metric history.
+  if (identifier.IsEquivalentToDefault()) return;
   saved_metrics_snapshots_->PushMetrics(
       WvMetricsSnapshot::MakeSnapshot(identifier, std::move(metrics)));
 }