Add new functions to improve vsync period switching by the platform:
- Adding a list of supported vsync periods to Config to avoid the need to expose
separate Configs for each vsync period.
- Adding an API to set the vsync period with timeline constraints to allow better
synchronization with vsync period change.
- Extending onVsync() callback to provide the current vsync period.
Test: rev up composer to 2.4 and test refresh rate switching
Bug: 141329414
Change-Id: I1a6f395d9634edadc68649d02f624f00173ec519
Create place holder for composer 2.4.
Minor: Extend DisplayCapability to include protected contents.
BUG: 135929065
Test: build
Change-Id: I9dbdb21f4a69027bedd95cd54e9c3c652bbe9006