[INTERNAL] core/HTML: document content restriction
[INTERNAL] core/HTML: document content restriction

Change-Id: Ic5e1e2c0bce7686564ec3e5f3ac14589f5f1d833

nzamani/openui5,SQCLabs/openui5,olirogers/openui5,SAP/openui5,olirogers/openui5,cschuff/openui5,SQCLabs/openui5,SQCLabs/openui5,nzamani/openui5,SAP/openui5,SAP/openui5,olirogers/openui5,SAP/openui5,cschuff/openui5,cschuff/openui5,nzamani/openui5