Bug 1479860: Remove unused aCompileEventHandlers argument from BindToTree. r=bz

Mostly automatic via sed. Only parts which I touched manually (apart from a
couple ones where I fixed indentation or which had mispelled arguments) are the
callers. I may have removed a couple redundant `virtual` keywords as well when
I started to do it manually, I can revert those if wanted.

Most of them are just removing the argument, but in Element.cpp I also added an
assertion for GetBindingParent when binding the ShadowRoot's kids (the binding
parent is set from the ShadowRoot constructor, and I don't think we bind a
shadow tree during unlink or what not which could cause a behavior difference).

Differential Revision: https://phabricator.services.mozilla.com/D2574

MozReview-Commit-ID: 2oIgatty2HU

dom/html/HTMLObjectElement.cpp

@@ -230,17 +230,14 @@ HTMLObjectElement::PostHandleEvent(EventChainPostVisitor& aVisitor)
 nsresult
 HTMLObjectElement::BindToTree(nsIDocument *aDocument,
                               nsIContent *aParent,
-                              nsIContent *aBindingParent,
-                              bool aCompileEventHandlers)
+                              nsIContent *aBindingParent)
 {
   nsresult rv = nsGenericHTMLFormElement::BindToTree(aDocument, aParent,
-                                                     aBindingParent,
-                                                     aCompileEventHandlers);
+                                                     aBindingParent);
   NS_ENSURE_SUCCESS(rv, rv);
 
   rv = nsObjectLoadingContent::BindToTree(aDocument, aParent,
-                                          aBindingParent,
-                                          aCompileEventHandlers);
+                                          aBindingParent);
   NS_ENSURE_SUCCESS(rv, rv);
 
   // Don't kick off load from being bound to a plugin document - the plugin