Rename {nsIDocument,nsIDocumentObserver,nsIFrame}::ContentChanged to CharacterDataChanged, since that's the only thing it's used for. Replace its nsISupports* parameter with a PRBool, since we don't need to allocate an object to pass a boolean parameter. Remove some (but probably not all) unneeded implementations on frames whose content is never a text node. b=234960 r+sr=jst

layout/inspector/src/inDOMView.cpp

@@ -766,9 +766,9 @@ inDOMView::ContentAppended(nsIDocument *aDocument,
 }
 
 void
-inDOMView::ContentChanged(nsIDocument *aDocument,
-                          nsIContent* aContent,
-                          nsISupports* aSubContent)
+inDOMView::CharacterDataChanged(nsIDocument *aDocument,
+                                nsIContent* aContent,
+                                PRBool aAppend)
 {
 }