Seemed to start failing pretty consistently around this build:

https://uberchromegw.corp.google.com/i/chromium.perf/builders/Android%20Nexus5%20Perf/builds/1537

Logs don't show much from what I can see: 

https://chromium-swarm.appspot.com/task?id=3cf67bb3665d2910&refresh=10&show_raw=1

Going to kick off a bisect on that range.

📍 Pinpoint job started.
https://pinpoint-dot-chromeperf.appspot.com/job/172f1ed6c40000

📍 Couldn't reproduce a difference.
https://pinpoint-dot-chromeperf.appspot.com/job/172f1ed6c40000

Looking at:
https://test-results.appspot.com/dashboards/flakiness_dashboard.html#testType=system_health.memory_mobile&builder=chromium.perf%3AAndroid%20Nexus5%20Perf

nytimes story is no longer failing, but pinterest_infinite_scroll is.

That one started failing at:
http://build.chromium.org/p/chromium.perf/builders/Android%20Nexus5%20Perf/builds/1509

Let's try another pinpoint job there.

📍 Pinpoint job started.
https://pinpoint-dot-chromeperf.appspot.com/job/148ba0b1c40000

📍 Couldn't reproduce a difference.
https://pinpoint-dot-chromeperf.appspot.com/job/148ba0b1c40000

+ned, another case where the test runs fine in one system (bisect), but not in another (waterfall).

I'll disable the test for now, seems to be failing on N5 only:
https://test-results.appspot.com/dashboards/flakiness_dashboard.html#testType=system_health.memory_mobile&tests=system_health.memory_mobile%2Fbrowse%3Asocial%3Apinterest_infinite_scroll

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/cfb408b73ef3da224049bdf11ea02502b37dc4c8

commit cfb408b73ef3da224049bdf11ea02502b37dc4c8
Author: Juan Antonio Navarro Perez <perezju@chromium.org>
Date: Tue Apr 24 13:22:35 2018

Disable sh.memory_mobile/browse:social:pinterest_infinite_scroll on N5

TBR=nednguye@google.com
NOTRY=true

Bug: 834905
Change-Id: Ie5a2736ca742071d1338ae1a28c025ef113c9786
Reviewed-on: https://chromium-review.googlesource.com/1025657
Reviewed-by: Juan Antonio Navarro Pérez <perezju@chromium.org>
Commit-Queue: Juan Antonio Navarro Pérez <perezju@chromium.org>
Cr-Commit-Position: refs/heads/master@{#553068}
[modify] https://crrev.com/cfb408b73ef3da224049bdf11ea02502b37dc4c8/tools/perf/expectations.config