* remove unnecessary chromeHeight that breaks the system * copy original _updateWindowPositions from 3.9 * use nativeWindowPlacement in update function * tidy up NaturalWindowPlacement function https://bugzilla.gnome.org/show_bug.cgi?id=699054
* remove unnecessary chromeHeight that breaks the system * copy original _updateWindowPositions from 3.9 * use nativeWindowPlacement in update function * tidy up NaturalWindowPlacement function https://bugzilla.gnome.org/show_bug.cgi?id=699054