Dana Walden is unifying Disney’s film, television, streaming and gaming under one roof days before a new CEO takes the reins. Walden, the incoming president and chief creative officer of the Walt Disney Company, unveiled a revamped leadership structure Monday that consolidates the House of Mouse’s sprawling content operations into a single powerhouse division. The restructuring elevates longtime exec Debra OConnell to a newly created role as chair of Disney Entertainment Television, handing her