am dc8cb9aa: Merge "Invalidate the whole status bar after layout transitions." into ics-mr1

        // don't wait for these transitions; we just want icons to fade in/out, not move around

        lt.setDuration(LayoutTransition.CHANGE_APPEARING, 0);

        lt.setDuration(LayoutTransition.CHANGE_DISAPPEARING, 0);

        lt.addTransitionListener(new LayoutTransition.TransitionListener() {

            public void endTransition(LayoutTransition transition, ViewGroup container,

                    View view, int transitionType) {

                // ensure the menu button doesn't stick around on the status bar after it's been

                // removed

                mBarContents.invalidate();

            }

            public void startTransition(LayoutTransition transition, ViewGroup container,

                    View view, int transitionType) {}

        });

        mNavigationArea.setLayoutTransition(lt);

        // no multi-touch on the nav buttons

        mNavigationArea.setMotionEventSplittingEnabled(false);