Revert of Roll trace viewer to pick up a fix for crbug.com/471720 (patchset #1 id:1 of https://codereview.chromium.org/1046953002/)
Revert of Roll trace viewer to pick up a fix for crbug.com/471720 (patchset #1 id:1 of https://codereview.chromium.org/1046953002/)

Reason for revert:
Prerequisite to reverting https://codereview.chromium.org/1049283002/

Original issue's description:
> Roll trace viewer to pick up a fix for crbug.com/471720
>
> BUG=471720
>
> Committed: https://crrev.com/71c416ee120fdce9c9af575ba08911be97a022df
> Cr-Commit-Position: refs/heads/master@{#322920}

TBR=nednguyen@google.com,skyostil@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=471720

Review URL: https://codereview.chromium.org/1050553002

Cr-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#323041}

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