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

libwvdrmengine/cdm/include/cdm_identifier.h

@@ -47,7 +47,7 @@ struct CdmIdentifier {
   // to the default cdm. E.g. no spoid, origin or app package name. Use this
   // comparison in lieu of the == operator when checking to see if the
   // identifier would cause the default provisioned certificate to be used.
-  bool IsEquivalentToDefault() {
+  bool IsEquivalentToDefault() const {
     return spoid == EMPTY_SPOID && origin == EMPTY_ORIGIN &&
            app_package_name == EMPTY_APP_PACKAGE_NAME;
   }