Remove viewFlipper used in contextual card dismissal.

- Use view's visibility to control which view we should show.
- Slice view can be built with normal height after removing viewFlipper.

Bug: 129438972
Bug: 128689305
Test: robotests
Change-Id: If7e9bd30d5cb5bcd3b9ff9f09cc2eae36543b9e9
9 files changed