Backed out changeset a710fd347db2 (bug 1890748) for causing bustages at Document.cpp. CLOSED TREE

docshell/base/nsDocShell.cpp

@@ -6572,6 +6572,8 @@ nsresult nsDocShell::CreateAboutBlankDocumentViewer(
       // after being set here.
       blankDoc->SetSandboxFlags(sandboxFlags);
 
+      blankDoc->InitFeaturePolicy();
+
       // create a content viewer for us and the new document
       docFactory->CreateInstanceForDocument(
           NS_ISUPPORTS_CAST(nsIDocShell*, this), blankDoc, "view",
@@ -6589,12 +6591,6 @@ nsresult nsDocShell::CreateAboutBlankDocumentViewer(
                       /* aLocationFlags */ 0);
         rv = mIsBeingDestroyed ? NS_ERROR_NOT_AVAILABLE : NS_OK;
       }
-
-      if (Element* embedderElement = blankDoc->GetEmbedderElement()) {
-        blankDoc->InitFeaturePolicy(AsVariant(embedderElement));
-      } else {
-        blankDoc->InitFeaturePolicy(AsVariant(Nothing{}));
-      }
     }
   }