Part of this is similar to bug 1551686.

In addition the fix proposed in that bug (which won't help in this case, 
though) we have two options:
1) completely get rid of caching in location-service
2) When the client specifies maximumAge as 0, oxide should keep discarding any 
position update which carries an old timestamp

I think that implementing #2 is a good thing regardless of #1, so I'd
suggest that at least this part would be fixed in Oxide.

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https://bugs.launchpad.net/bugs/1604446

Title:
  getcurrentPosition in oxide does not cause a wake up of the GPS

Status in Oxide:
  New
Status in webapps-sprint:
  New
Status in location-service package in Ubuntu:
  New

Bug description:
  A browser based application that wants to use position can call 
getCurrentPosition
  
https://developer.mozilla.org/en-US/docs/Web/API/Geolocation/getCurrentPosition
  or watchPosition
  https://developer.mozilla.org/en-US/docs/Web/API/Geolocation/watchPosition

  maps (such as google maps) and navigation applications will typically use 
watchPosition which will cause location services to turn on the GPS chip and 
get a new location for the device.
  non-map applications that just want location aware context for things such as 
weather or local stores e.g. https://www.aldi.co.uk/store-finder do not 
subscribe to updates with watchPosition. They just call getCurrentPosition and 
expect a decent enough position to use.

  Ubuntu Touch returns the last known position from the cache when
  getCurrentPosition is called, and then fails to turn on the GPS. It
  should block until it has a decent position and return good data to
  the success callback. It certainly shouldn't return a bad position and
  then fail to make an effort to get a good position.

  The result of this bug is that you can go to a location aware web
  page, it will think you are somewhere else entirely, and refreshing
  will not improve the situation, you have to open a mapping application
  that uses watchPosition and wait for a fix to be obtained before going
  back to your location aware web page and refreshing to get good data.

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