One of the things that’s gotten lost with the popularity of streaming TV shows and movies is the extra features that come on DVDs. But those days may not be so bygone on Netflix. At the GigaOm Mobilize conference in San Francisco, Todd Yellin, vice president of product innovation at Netflix, said that the company will bring those DVD-style extras to its original programming. “The core of the experience is watching the story that the directors and writers contended, and that’s like 99 percent of what it is,” he said. “But supplemental content, whether that’s extra features or so forth, we’re going to test that around our own originals.” Netflix, of course, has a growing stock of hugely popular original programming, from the Emmy-winning “House of Cards” to its most recent major breakout, “Orange Is the New Black.”