For the following snippet: <div style="float: left;"> <img style="width: 100%; height: 100%;"/> </div> Webkit renders the image with height 100% of the window, while IE and Firefox render the image at the intrinsic height of the image. See chromium bug: http://code.google.com/p/chromium/issues/detail?id=29380
47156 fixes this.
Fixed in r98852.