This is an arrow pointing up and left (or -45 degrees if up is 0 degrees). It's a basic line going from the bottom-right to the upper-left and then an arrowhead on that line continue to point to the upper-left.
This Up Left icon has Android KitKat style
. If you use the icons for Android apps, we recommend using our latest Material Icons icon pack (please check our sidebar on the right). Otherwise, it's a solid icon pack that looks good in small resolutions, either on the web or in print. It's characterized by thick lines, smooth corners, and is optimized for 24x24 pixels.