2 of the CLs were reverted so I've only testSwipeToDismissReadingListItem was disabled.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/2084d0274e99a6a5de25148fca67ded219682a2a

commit 2084d0274e99a6a5de25148fca67ded219682a2a
Author: Mike Dougherty <michaeldo@chromium.org>
Date: Fri Aug 18 21:56:21 2017

Disable content suggestions egtest on iPhone.

Bug:  756950 
Change-Id: Id18bf811b8e90d38fcea997a620bdb1acaf8c02c
Reviewed-on: https://chromium-review.googlesource.com/621412
Commit-Queue: Peter Lee <pkl@chromium.org>
Reviewed-by: Eugene But <eugenebut@chromium.org>
Reviewed-by: Mike Dougherty <michaeldo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#495706}
[modify] https://crrev.com/2084d0274e99a6a5de25148fca67ded219682a2a/ios/chrome/browser/ui/content_suggestions/content_suggestions_egtest.mm

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/20dd4fb040ec9b74ed7038bbda0a7ac3a2652e88

commit 20dd4fb040ec9b74ed7038bbda0a7ac3a2652e88
Author: Gauthier Ambard <gambard@chromium.org>
Date: Mon Aug 21 15:22:55 2017

Reenable testSwipeToDismissReadingListItem

The test was failing on iPhone 5s because the toolbar menu was not
visible. This is because the iPhone 5s screen is smaller, so the test
has to scroll.

Bug:  756950 
Change-Id: I53cf387ec8a2250c88446180a4607ec958f33ff7
Reviewed-on: https://chromium-review.googlesource.com/623088
Commit-Queue: Stepan Khapugin <stkhapugin@chromium.org>
Reviewed-by: Stepan Khapugin <stkhapugin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#495937}
[modify] https://crrev.com/20dd4fb040ec9b74ed7038bbda0a7ac3a2652e88/ios/chrome/browser/ui/content_suggestions/content_suggestions_egtest.mm