Edit transactions should store their editor instance with strong reference and they should be released at destroying the editor.
MozReview-Commit-ID: D67KU8WFxyo
Some uses nsIDOMCharacterData to get the attribute of text node. But, by using Text object, we don't need nsIDOMCharacter. So we should use Text object instead of nsIDOMCharacterData instead if possible.
MozReview-Commit-ID: 1cwTUcecFj3
This patch also renames:
EditorInputEventDispatcher -> mozilla::EditorInputEventDispatcher
And some variable names are renamed from aEditor or mEditor to aEditorBase or mEditorBase for making their types clearer.
MozReview-Commit-ID: 2FCXWpLMn8e
