BradLarson/GPUImage — pull request #1438 by bradleyayers (2014-03-08 10:46:18+00:00)
Title: Remove KVO on frame for GPUImageView, improves performance and fixes iOS 7 support

Using KVO on `UIView frame` doesn't seem to work for me on iOS7.

I've changed the approach to rely on `layoutSubviews`, and also to only trash the frame buffer when the width/height of the bounds changes. I think that'll resolve performance problems of issues like #1407.