tree ac481d7c67921e64c957dafcd7b553b2be0f7c93
parent d7c058c4e1bfd772e514f6d09deb21d7893d28c8
author twyen <twyen@google.com> 1525736177 -0700
committer Copybara-Service <copybara-piper@google.com> 1525910031 -0700

Place Duo calls with PreCall

This CL consolidates common duo calling operations into precall, including checking reachability, falling back to carrier video call, placing the call to duo with startActivityForResult.

TEST=TAP
Bug: 78783816
Test: TAP
PiperOrigin-RevId: 195742478
Change-Id: I9fea1e4999f604e1f3a153b28079cd0db77b7393