// Virtual viewport for fixed-position elements, scrollbars during pinch.
const char kEnablePinchVirtualViewport[] = "enable-pinch-virtual-viewport";
+const char kDisablePinchVirtualViewport[] = "disable-pinch-virtual-viewport";
// Disable partial swap which is needed for some OpenGL drivers / emulators.
const char kUIDisablePartialSwap[] = "ui-disable-partial-swap";