am 83e9525c: Merge "Fix premature clearing of clearable sysui flags" into mnc-dev

        if (mLastDispatchedSystemUiVisibility == visibility) {

            return;

        }

        final int globalDiff = (visibility ^ mLastDispatchedSystemUiVisibility)

                // We are only interested in differences of one of the

                // clearable flags...

                & View.SYSTEM_UI_CLEARABLE_FLAGS

                // ...if it has actually been cleared.

                & ~visibility;

        mLastDispatchedSystemUiVisibility = visibility;

        mInputManager.setSystemUiVisibility(visibility);

        final WindowList windows = getDefaultWindowListLocked();

            WindowState ws = windows.get(i);

            try {

                int curValue = ws.mSystemUiVisibility;

                int diff = curValue ^ visibility;

                // We are only interested in differences of one of the

                // clearable flags...

                diff &= View.SYSTEM_UI_CLEARABLE_FLAGS;

                // ...if it has actually been cleared.

                diff &= ~visibility;

                int diff = (curValue ^ visibility) & globalDiff;

                int newValue = (curValue&~diff) | (visibility&diff);

                if (newValue != curValue) {

                    ws.mSeq++;