Adding support for loading workspace in the absence of Launcher.

> LoadWorkspace can be called with a LoaderResult which does not bind anything.
> Synchronous bind does not look for a valid page id, and will fallback to the
  current pageId similar to full load flow

Bug: 37616877
Change-Id: If14491dc79c5b85ae1019cc93e4e08759df3387d
12 files changed