media: Change auto to not deduce raw pointers.

media/renderers/skcanvas_video_renderer.cc

Index: media/renderers/skcanvas_video_renderer.cc
diff --git a/media/renderers/skcanvas_video_renderer.cc b/media/renderers/skcanvas_video_renderer.cc
index 56cd980c1efe2a81c3f50e4b74fa6ba9d9189fd1..df59249862b7157b68704f493dd636c0ea7151a5 100644
--- a/media/renderers/skcanvas_video_renderer.cc
+++ b/media/renderers/skcanvas_video_renderer.cc
@@ -377,7 +377,7 @@ void SkCanvasVideoRenderer::Paint(const scoped_refptr<VideoFrame>& video_frame,
             NewSkImageFromVideoFrameNative(video_frame.get(), context_3d);
       }
     } else {
-      auto video_generator = new VideoImageGenerator(video_frame);
+      auto* video_generator = new VideoImageGenerator(video_frame);
       last_image_ = SkImage::MakeFromGenerator(video_generator);
     }
     if (!last_image_)  // Couldn't create the SkImage.