tree fa7f9e0853e6d09c6d1c34334e480d684ee5ff58
parent e7ac324c71fb52d4104c8d92c9cea55d334bb4f1
author Jason Monk <jmonk@google.com> 1490989347 -0400
committer Kevin Chyn <kchyn@google.com> 1491517154 -0700

Add metrics for nav buttons through KeyButtonView

Doesn't cover home-long-press or overview, but those appear to be
covered by other events.

Test: runtest systemui
Merged-In: I590b52765aaef3c2bf573ce8ab980aa992b1d5b0
Change-Id: I630356245e223a3fb8d4d2fe11be5d498227c0e3
Fixes: 25931698