b171abbca8
A previous change limited the size of a window to the parent window size at max. so that child windows don't extend outside their parent stack when resized in a multi-window environment. This broke the wallpaper positioning functionality since the wallpaper is no longer bigger than it's containing stack so it can't be scrolled. Now, we only limit the window size to the parent window size if the window stack is not fullscreen. Bug: 19434096 Bug: 19225079 Change-Id: I1a8788727e6c4a91da45d8a87850093ef5a24edf