When creating ServiceOptions objects or fake HashConfigs use the
constant to refer the config name
Change-Id: I59a29f25b76e896c07e82156c6cc4494f98e64cc
This makes the data stored by LinkCache compatible with PageStoreRecord,
so we can use LinkCache inside PageStore.
This causes PageStore to make use of local caching as well as WANObjectCache.
Note that getPageById() does not yet benefit from cache, but does
populate the cache.
Bug: T278940
Change-Id: Icc27a0d9299a3e4ce45521daef87ad06ec06f064
