commit ce8b9f68112111dd9e16e1eab58525e4b36300b3
author Siddhartha S <ssid@chromium.org> Sat Apr 20 02:16:09 2019
committer Commit Bot <commit-bot@chromium.org> Sat Apr 20 02:16:09 2019
tree dffab6a4cd22447ad27a06e333ec0f32dd1a3058
parent 7d94539fd7d36499f85c19771584589feaa65fa9

tracing: Consumer host will write / wait to write trace buffer in background

Writing to consumer client data pipe in main thread can cause us to wait
for the pipe to be ready on main thread. The main thread need to run
other work like giving out SMBs to processes. It can also cause deadlock
if the consumer client is also waiting for SMB. So, move the writer to
background task runner.

BUG=953837

Change-Id: I5cad2c45af8b4c7f0a69372e1c2633896c7e518e
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1573162
Commit-Queue: ssid <ssid@chromium.org>
Reviewed-by: oysteine <oysteine@chromium.org>
Cr-Commit-Position: refs/heads/master@{#652725}