Fan Zhang cc88c2fe43 Add place holder rows to wifi slice.
When loading wifi slice, the wifitracker is super slow to scan and
return APs. So we will show up to 3 rows of placeholder in the slice UI.

- When building slice, if there are at least 3 APs, show first 3.
- When there aren't enough APs, show them all and fill the rest of
  placeholder rows.

Bug: 118224581
Test: robotests
Change-Id: Id332f64bfa335543ea406f73b249f93504d63d4f
2018-10-23 15:48:14 -07:00
2018-10-10 10:35:51 -07:00
2018-10-23 19:37:19 +08:00
2015-04-13 09:21:39 -07:00
2017-10-13 15:59:03 -07:00
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3.1 GiB
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Java 89.8%
Kotlin 10.2%