tree adcf6d2fb433fab1db795aaf6954602bd3f910a0
parent 11420791428f82010a3b77ee960c1b4d6958952f
author zhenw <zhenw@chromium.org> 1450202847 -0800
committer Commit bot <commit-bot@chromium.org> 1450202950 +0000

[Tracing Clock Sync] Add TracingAgent interface in Chrome

This CL adds TracingAgent interface in Chrome and hooks up
corresponding subclasses.

Design doc: https://goo.gl/8Vy6qX

BUG=542390

Review URL: https://codereview.chromium.org/1468173003

Cr-Original-Commit-Position: refs/heads/master@{#365284}
Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src
Cr-Mirrored-Commit: b0b2a7f0fd7f6ec4a43f735e643a1f2f90351dc8