GitLab

This reverts commit 1f76c848.

Reason for revert: WebViewTests/WebViewTest.DownloadCookieIsolation_CrossSession/0 is flaky with network service.

Original change's description:
> Fix webview tag's using an on-disk directory with the network service enabled.
> 
> Bug: 769401
> Cq-Include-Trybots: master.tryserver.chromium.linux:linux_mojo
> Change-Id: Ia9ad46583b00f88631eccbc65c23cf6864134f26
> Reviewed-on: https://chromium-review.googlesource.com/965921
> Reviewed-by: Matt Menke <mmenke@chromium.org>
> Commit-Queue: John Abd-El-Malek <jam@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#543837}

TBR=creis@chromium.org,jam@chromium.org,mmenke@chromium.org

Bug: 769401, 822999
Change-Id: I0feb3dcddc8c7a767b1026c9f3a206419ab89225
Cq-Include-Trybots: master.tryserver.chromium.linux:linux_mojo
Reviewed-on: https://chromium-review.googlesource.com/967056Reviewed-by: Karan Bhatia <karandeepb@chromium.org>
Commit-Queue: Karan Bhatia <karandeepb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#543921}