tree a61396a86671ab6fb25ac41486bae223764ccf55
parent acedb7bc166fb805a037507253e935f3ea0fd0f9
author Primiano Tucci <primiano@google.com> 1542625171 +0100
committer Primiano Tucci <primiano@google.com> 1542625171 +0100

UI: fix exceptions when only thread info is avilable

Fixes a crash in the UI that happens when recording
a trace with only sched_switch and no process association.
There were two problems here:
1) The controller was partly lying on the thread info,
   providing a proc name == thread name, but NULL proc id.
2) The frontend should be robust to deal with thread info
   that don't have any matching process info.

Test:  http://localhost:3002#!/?s=2efeb0931cd8c808ca4f62a2b81d6cfdcd573d2e5e9b4462ddf3974bf36cc
Change-Id: I4a3b6a4de8af80847f2d2f11d3d9e9aab481c784