Use ContextUtils in PhysicalWeb
The Physical Web code currently requires a lot of passing around
Contexts where not necessary because we just want the Application.
This change uses ContextUtils.getApplicationContext() when applicable.
BUG=
624204
Committed:
https://crrev.com/b444c43df71f607a72e47e234d23801c5bdff42e
Cr-Commit-Position: refs/heads/master@{#404238}