The code snippet was copied straight from the MediaBrowserService
sample app. Since the code snippet consisted almost entirely of
calls to *other* methods in that sample app, the snippet wasn't
very helpful--and it wouldn't be helpful to add a lot of verbiage
explaining the sample app. So instead, I made the code more generic
(e.g. comments saying "You need to write code to check for XYZ")
followed by a link to the sample app.
Fixed other miscellaneous problems in the code snippets while we had
the file open.
See first comment for doc stage location.
bug: 20008288
Change-Id: Ic080ebffcc43e332ec3335b730c07ef5f8b64fa9
f01aca2caf