Merge changes from topic "b162923491-wm-sysui-subcomponents"

* changes:
  5/N Reduce number of accessors of root component.
  4/N Simplify InjectionInflationController.
  3/N Introduce Car/TV SysUIComponent Variants
  2/N: Introduce WMComponent and SysUIComponent.
  1/N: Rename SysuiRootComponent to GlobalRootComponent