The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/fe4bf0ef14bf8210c68afe04d027c3ea7e0fc638

commit fe4bf0ef14bf8210c68afe04d027c3ea7e0fc638
Author: lgrey <lgrey@chromium.org>
Date: Thu Oct 13 18:37:21 2016

Make new tab button animation RTL-aware

BUG= 648559 

Review-Url: https://codereview.chromium.org/2407413004
Cr-Commit-Position: refs/heads/master@{#425102}

[modify] https://crrev.com/fe4bf0ef14bf8210c68afe04d027c3ea7e0fc638/chrome/browser/ui/cocoa/tabs/tab_strip_controller.mm

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/052b36d8d021d293f9cbd8c32b1ddee5c99ade8d

commit 052b36d8d021d293f9cbd8c32b1ddee5c99ade8d
Author: lgrey <lgrey@chromium.org>
Date: Wed Nov 09 19:17:53 2016

[Mac] Reverse tabs in RTL mode

Also exposes the kExperimentalMacRTL flag publicly so that it can be
enabled in tests.

BUG= 648559 

Review-Url: https://codereview.chromium.org/2488833002
Cr-Commit-Position: refs/heads/master@{#431004}

[modify] https://crrev.com/052b36d8d021d293f9cbd8c32b1ddee5c99ade8d/chrome/browser/ui/cocoa/l10n_util.h
[modify] https://crrev.com/052b36d8d021d293f9cbd8c32b1ddee5c99ade8d/chrome/browser/ui/cocoa/l10n_util.mm
[modify] https://crrev.com/052b36d8d021d293f9cbd8c32b1ddee5c99ade8d/chrome/browser/ui/cocoa/tabs/tab_controller.h
[modify] https://crrev.com/052b36d8d021d293f9cbd8c32b1ddee5c99ade8d/chrome/browser/ui/cocoa/tabs/tab_controller.mm
[modify] https://crrev.com/052b36d8d021d293f9cbd8c32b1ddee5c99ade8d/chrome/browser/ui/cocoa/tabs/tab_controller_unittest.mm

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/144e6019d55ce9a31b22b68b045f05eddd8bfae0

commit 144e6019d55ce9a31b22b68b045f05eddd8bfae0
Author: lgrey <lgrey@chromium.org>
Date: Fri Nov 11 16:56:31 2016

[Mac] (More) RTL support for tab strip

Still needs work re: dragging and profile switcher, but this change
fixes most of the remaining layout issues and rapid close mode.
BUG= 648559 

Review-Url: https://codereview.chromium.org/2489373002
Cr-Commit-Position: refs/heads/master@{#431582}

[modify] https://crrev.com/144e6019d55ce9a31b22b68b045f05eddd8bfae0/chrome/browser/ui/cocoa/browser_window_controller_private.mm
[modify] https://crrev.com/144e6019d55ce9a31b22b68b045f05eddd8bfae0/chrome/browser/ui/cocoa/browser_window_layout.h
[modify] https://crrev.com/144e6019d55ce9a31b22b68b045f05eddd8bfae0/chrome/browser/ui/cocoa/browser_window_layout.mm
[modify] https://crrev.com/144e6019d55ce9a31b22b68b045f05eddd8bfae0/chrome/browser/ui/cocoa/browser_window_layout_unittest.mm
[modify] https://crrev.com/144e6019d55ce9a31b22b68b045f05eddd8bfae0/chrome/browser/ui/cocoa/tabs/tab_strip_controller.h
[modify] https://crrev.com/144e6019d55ce9a31b22b68b045f05eddd8bfae0/chrome/browser/ui/cocoa/tabs/tab_strip_controller.mm

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/69c69e8b4dc28142dd4655e205f5ccd938569a00

commit 69c69e8b4dc28142dd4655e205f5ccd938569a00
Author: lgrey <lgrey@chromium.org>
Date: Tue Nov 15 00:22:32 2016

[Mac] Fix tab dragging in RTL

BUG= 648559 

Review-Url: https://codereview.chromium.org/2493273002
Cr-Commit-Position: refs/heads/master@{#432012}

[modify] https://crrev.com/69c69e8b4dc28142dd4655e205f5ccd938569a00/chrome/browser/ui/cocoa/tabs/tab_strip_controller.mm

 Issue 651300  has been merged into this issue.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/667b4c49949a49eb917a742fe629d7131ee03225

commit 667b4c49949a49eb917a742fe629d7131ee03225
Author: lgrey <lgrey@chromium.org>
Date: Wed Nov 16 14:58:32 2016

[Mac] Anchor profile switcher to left side of avatar button in RTL

BUG= 647204 , 648559 

Review-Url: https://codereview.chromium.org/2490323002
Cr-Commit-Position: refs/heads/master@{#432485}

[modify] https://crrev.com/667b4c49949a49eb917a742fe629d7131ee03225/chrome/browser/ui/cocoa/base_bubble_controller.mm
[modify] https://crrev.com/667b4c49949a49eb917a742fe629d7131ee03225/chrome/browser/ui/cocoa/browser/zoom_bubble_controller.mm
[modify] https://crrev.com/667b4c49949a49eb917a742fe629d7131ee03225/chrome/browser/ui/cocoa/info_bubble_view.h
[modify] https://crrev.com/667b4c49949a49eb917a742fe629d7131ee03225/chrome/browser/ui/cocoa/profiles/avatar_base_controller.mm
[modify] https://crrev.com/667b4c49949a49eb917a742fe629d7131ee03225/chrome/browser/ui/cocoa/profiles/profile_chooser_controller.mm

Attaching a screenshot of the RTL tabstrip on 10.11 with https://codereview.chromium.org/2541583002/ applied

Deleted: Screen Shot 2016-11-29 at 12.20.02 PM.png 18.5 KB

	Screen Shot 2016-11-29 at 12.20.02 PM.png 18.5 KB View Download

This is not a localization bug. Can't confirm that it's still relevant to the current English UI.

mac-rtl flag doesn't have any effect as tested on Mac OS 10.12.5 on the latest canary version: 61.0.3143.0.

lgrey@: Could you please confirm if this is still WIP.