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This reverts commit 71c0f5b5.

Reason for revert: This CL logs to stderr on every test, causing the archive_webkit_layout_tests step to explode. See crbug.com/776334.

Original change's description:
> Reland: Add UKM Document.OutliveTimeAfterShutdown
>
> This is basically same as https://chromium-review.googlesource.com/c/chromium/src/+/647050.
> This CL tries to reland the change after rebasing.
>
> This CL adds a new UKM Document.OutliveTimeAfterShutdown, that is
> recorded when a Document object survives 5, 10, 20 or 50 garbage
> collections after detached. If a document outlives such long time, the
> document might be leaked. The UKM would be very useful to know where such
> leaky documents exist and to fix them.
>
> Design doc: https://docs.google.com/document/d/1fbs5smdd-pBLLMpq7u8EkyddZILtI7CZPJlo_AA1kak/edit?usp=sharing
>
> Bug: 757374
> Change-Id: I1f64d2a9260d898c386bb948dd25a1c5586f8eb7
> Reviewed-on: https://chromium-review.googlesource.com/722301
> Commit-Queue: Hajime Hoshi <hajimehoshi@chromium.org>
> Reviewed-by: Kentaro Hara <haraken@chromium.org>
> Reviewed-by: Chris Palmer <palmer@chromium.org>
> Reviewed-by: Steven Holte <holte@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#510029}

TBR=palmer@chromium.org,hajimehoshi@chromium.org,haraken@chromium.org,holte@chromium.org

Change-Id: I59155476ced5620a87e027225f9f017c296813e2
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: 757374
Reviewed-on: https://chromium-review.googlesource.com/729462
Commit-Queue: Dirk Pranke <dpranke@chromium.org>
Reviewed-by: Dirk Pranke <dpranke@chromium.org>
Reviewed-by: Kentaro Hara <haraken@chromium.org>
Cr-Commit-Position: refs/heads/master@{#510247}