One of the Service Worker tests (external/wpt/service-workers/service-worker/fetch-event-redirect.https.html) seems to be consistently OOMing on the Debug builder; the Release builders seem to be fine. 

https://test-results.appspot.com/dashboards/flakiness_dashboard.html#tests=external%2Fwpt%2Fservice-workers%2Fservice-worker%2Ffetch-event-redirect.https.html&testType=webkit_tests

Sample stdio snippet from a failure (https://uberchromegw.corp.google.com/i/chromium.webkit/builders/WebKit%20Linux%20Trusty%20%28dbg%29/builds/967/steps/webkit_tests/logs/stdio):

14:00:06.417 32660 worker/0 external/wpt/service-workers/service-worker/fetch-event-redirect.https.html crashed, (stderr lines):
14:00:06.417 32660   Xlib:  extension "RANDR" missing on display ":9".
14:00:06.417 32660   [32667:32712:0306/135957.143407:9470462574:ERROR:cert_verify_proc_nss.cc(913)] CERT_PKIXVerifyCert for web-platform.test failed err=-8179
14:00:06.417 32660   [32667:32713:0306/135957.571237:9470890405:ERROR:cert_verify_proc_nss.cc(913)] CERT_PKIXVerifyCert for web-platform.test failed err=-8179
14:00:06.417 32660   [32667:32723:0306/135959.779689:9473098857:WARNING:http_cache_transaction.cc(1093)] Unable to create cache entry
14:00:06.417 32660   [1:1:0306/140005.513263:9478832715:ERROR:platform_thread_posix.cc(119)] pthread_create: Resource temporarily unavailable
14:00:06.417 32660   [1:1:0306/140005.514147:9478833463:ERROR:platform_thread_posix.cc(119)] pthread_create: Resource temporarily unavailable
14:00:06.417 32660   [1:1:0306/140005.517138:9478836482:ERROR:platform_thread_posix.cc(119)] pthread_create: Resource temporarily unavailable
14:00:06.417 32660   [1:1:0306/140005.517517:9478836830:ERROR:platform_thread_posix.cc(119)] pthread_create: Resource temporarily unavailable
14:00:06.417 32660   [1:1:0306/140005.519467:9478838788:ERROR:platform_thread_posix.cc(119)] pthread_create: Resource temporarily unavailable
14:00:06.417 32660   [1:1:0306/140005.519838:9478839191:ERROR:platform_thread_posix.cc(119)] pthread_create: Resource temporarily unavailable
14:00:06.417 32660   [1:1:0306/140005.872856:9479192278:ERROR:platform_thread_posix.cc(119)] pthread_create: Resource temporarily unavailable
14:00:06.417 32660   [1:1:0306/140005.873239:9479192526:ERROR:platform_thread_posix.cc(119)] pthread_create: Resource temporarily unavailable
14:00:06.420 23663 [1/2] external/wpt/service-workers/service-worker/fetch-event-redirect.https.html failed unexpectedly (renderer crashed)

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/09d4b5a586b0701cf794aa34b86b352196b481a5

commit 09d4b5a586b0701cf794aa34b86b352196b481a5
Author: sclittle <sclittle@chromium.org>
Date: Tue Mar 07 00:21:33 2017

Disable crashing service-worker/fetch-event-redirect.https.html test.

BUG= 698872 
TBR=shimazu@chromium.org

Review-Url: https://codereview.chromium.org/2738593002
Cr-Commit-Position: refs/heads/master@{#455005}

[modify] https://crrev.com/09d4b5a586b0701cf794aa34b86b352196b481a5/third_party/WebKit/LayoutTests/TestExpectations

I take this.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/35a17d3593ecde3b7cea1ad36ada111d659b974a

commit 35a17d3593ecde3b7cea1ad36ada111d659b974a
Author: horo <horo@chromium.org>
Date: Thu Mar 09 06:25:26 2017

Fix fetch-event-redirect.https.html layout test using promise_test

This test is crashing on Debug build because of OOM.
This CL changes the test to use promise_test instead of async_test inorder not to start multiple service workers in parallel.

BUG= 698872 

Review-Url: https://codereview.chromium.org/2738143002
Cr-Commit-Position: refs/heads/master@{#455680}

[modify] https://crrev.com/35a17d3593ecde3b7cea1ad36ada111d659b974a/third_party/WebKit/LayoutTests/FlagExpectations/enable-browser-side-navigation
[modify] https://crrev.com/35a17d3593ecde3b7cea1ad36ada111d659b974a/third_party/WebKit/LayoutTests/TestExpectations
[modify] https://crrev.com/35a17d3593ecde3b7cea1ad36ada111d659b974a/third_party/WebKit/LayoutTests/external/wpt/service-workers/service-worker/fetch-event-redirect.https.html

Removing sheriff label since this is assigned.