Need to confirm if this afflicts all collections.

Whoops realized the only other collection would be settings but that one is OK.

Can we use accessoryType here instead of a custom accessoryView?  That would give us the RTL behavior for free.

I can make the change once sczs confirms that we don't need to use accessoryView for any other reason.

Yeah we can, I believe we went with that custom accessoryView because it was the mocks were a little different than the default "arrow" asset, so if Pete or Martijn are OK then we should be good.

Do we use that same custom arrow and checkmark anywhere else in collections?

We use the same arrow rotated 90 degrees on the collapsable/expandable headers in RecentTabs. 
Its also used in one of the cells on EditBookmarks (the one that allows you to select the parent folder).
Finally there's a TableViewAccessoryItem that uses it, I think we only use that one on Show Full History in recent tabs.

(Apparently its also used on SettingsCollapsibleItem)

Ok, then I think we should keep the same images and just use a flip transform when we're in RTL.  Otherwise we'll have inconsistent chevrons.

Does that sound reasonable?  We can try to move to system images for 70 or 71.

We could also change the 2 items that push something into the NavStack to use the default chevron (This one and the one for choosing the parent folder), maybe even the one from TableViewAccessoryItem. Those changes should be easy I believe.

Also I guess this should also be happening on the other cells I'm talking about, right? So we might have to fix those too.

The other cases are rotating the chevron, so we'll need to use a custom image anyways.

@sczs are you taking this one?  Let's just manually add a transform on the imageview for now.  I think that's the safest change for 69.

Because of #c3 I hadn't started yet. Sg, will go with the manual for 69

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/ba8109d2b154d93baba07f960772bb2d4a8129ad

commit ba8109d2b154d93baba07f960772bb2d4a8129ad
Author: sczs <sczs@chromium.org>
Date: Fri Aug 03 22:19:45 2018

[ios] Rotates Collections TableViewCell chevrons on RTL

Uses CGAffineTransformMakeRotation to do a 180 rotation of
the collection cells accessoryView whenever a chevron is
being used on RTL.

Bug:  869142 
Cq-Include-Trybots: luci.chromium.try:ios-simulator-full-configs;master.tryserver.chromium.mac:ios-simulator-cronet
Change-Id: Ic10ebc0067e34a7fe8d593d4aafeb25dca4f9e99
Reviewed-on: https://chromium-review.googlesource.com/1162428
Commit-Queue: Sergio Collazos <sczs@chromium.org>
Reviewed-by: edchin <edchin@chromium.org>
Reviewed-by: Kurt Horimoto <kkhorimoto@chromium.org>
Cr-Commit-Position: refs/heads/master@{#580674}
[modify] https://crrev.com/ba8109d2b154d93baba07f960772bb2d4a8129ad/ios/chrome/browser/ui/bookmarks/cells/BUILD.gn
[modify] https://crrev.com/ba8109d2b154d93baba07f960772bb2d4a8129ad/ios/chrome/browser/ui/bookmarks/cells/bookmark_folder_item.mm
[modify] https://crrev.com/ba8109d2b154d93baba07f960772bb2d4a8129ad/ios/chrome/browser/ui/bookmarks/cells/bookmark_parent_folder_item.mm
[modify] https://crrev.com/ba8109d2b154d93baba07f960772bb2d4a8129ad/ios/chrome/browser/ui/table_view/cells/BUILD.gn
[modify] https://crrev.com/ba8109d2b154d93baba07f960772bb2d4a8129ad/ios/chrome/browser/ui/table_view/cells/table_view_accessory_item.mm

Waiting for next canary for verification

Verified on Canary. kariahda@ PTAl for manual approval

This bug requires manual review: Less than 24 days to go before AppStore submit on M69
Please contact the milestone owner if you have questions.
Owners: amineer@(Android), kariahda@(iOS), cindyb@(ChromeOS), govind@(Desktop)

For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot

Issue verified 
Version: Chrome Canary 70.0.3515.0
Device: iPhone 8
iOS: 11.4

Bookmark arrow is ( “<”) when in RTL.
https://drive.google.com/open?id=1q0KGJYFm28LeNj7BWDP1ojGN_6kN82GR
https://screenshot.googleplex.com/RYTBH3QLuKj

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/404d9a0bee46a103cfadc2d3b9ed8e394ea1ec64

commit 404d9a0bee46a103cfadc2d3b9ed8e394ea1ec64
Author: sczs <sczs@chromium.org>
Date: Tue Aug 07 18:17:56 2018

[ios] Rotates Collections TableViewCell chevrons on RTL

Uses CGAffineTransformMakeRotation to do a 180 rotation of
the collection cells accessoryView whenever a chevron is
being used on RTL.

TBR=sczs@chromium.org

(cherry picked from commit ba8109d2b154d93baba07f960772bb2d4a8129ad)

Bug:  869142 
Cq-Include-Trybots: luci.chromium.try:ios-simulator-full-configs;master.tryserver.chromium.mac:ios-simulator-cronet
Change-Id: Ic10ebc0067e34a7fe8d593d4aafeb25dca4f9e99
Reviewed-on: https://chromium-review.googlesource.com/1162428
Commit-Queue: Sergio Collazos <sczs@chromium.org>
Reviewed-by: edchin <edchin@chromium.org>
Reviewed-by: Kurt Horimoto <kkhorimoto@chromium.org>
Cr-Original-Commit-Position: refs/heads/master@{#580674}
Reviewed-on: https://chromium-review.googlesource.com/1165786
Reviewed-by: Sergio Collazos <sczs@chromium.org>
Cr-Commit-Position: refs/branch-heads/3497@{#470}
Cr-Branched-From: 271eaf50594eb818c9295dc78d364aea18c82ea8-refs/heads/master@{#576753}
[modify] https://crrev.com/404d9a0bee46a103cfadc2d3b9ed8e394ea1ec64/ios/chrome/browser/ui/bookmarks/cells/BUILD.gn
[modify] https://crrev.com/404d9a0bee46a103cfadc2d3b9ed8e394ea1ec64/ios/chrome/browser/ui/bookmarks/cells/bookmark_folder_item.mm
[modify] https://crrev.com/404d9a0bee46a103cfadc2d3b9ed8e394ea1ec64/ios/chrome/browser/ui/bookmarks/cells/bookmark_parent_folder_item.mm
[modify] https://crrev.com/404d9a0bee46a103cfadc2d3b9ed8e394ea1ec64/ios/chrome/browser/ui/table_view/cells/BUILD.gn
[modify] https://crrev.com/404d9a0bee46a103cfadc2d3b9ed8e394ea1ec64/ios/chrome/browser/ui/table_view/cells/table_view_accessory_item.mm

Verified in 69.0.3497.31 Beta,  iPhone X iOS 11.4.1, iPhone7 iOS 12
Looks good.