http://b/issue?id=3378224 This is a simple unhide. Allow the use of WebView pinch-to-zoom gestures without the on screen zoom controls. Currently, enabling pinch to zoom with the public API also shows the on screen zoom buttons. If the zoom buttons are not wanted, a custom implementation of pinch to zoom is required, which can't be done correctly at this point. Change-Id: I3f94080471c3a4b498b11c91603fff9994dc3c2c