Merge "Do not let snapshot window control the bar" into sc-v2-dev

    }

    void updateSystemBarAttributes() {

        WindowState winCandidate = mFocusedWindow;

        if (winCandidate == null && mTopFullscreenOpaqueWindowState != null

                && (mTopFullscreenOpaqueWindowState.mAttrs.flags

                & WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE) == 0) {

            // Only focusable window can take system bar control.

            winCandidate = mTopFullscreenOpaqueWindowState;

        }

        // If there is no window focused, there will be nobody to handle the events

        // anyway, so just hang on in whatever state we're in until things settle down.

        WindowState winCandidate = mFocusedWindow != null ? mFocusedWindow

                : mTopFullscreenOpaqueWindowState;

        if (winCandidate == null) {

            return;

        }