Any update here? Stable cut is next week.

Change to Block M71 instead, as per conversation with eugenebut@ we can keep 1% of users in the old cookiestore.

Lindsay, we want to measure the success of Cookie Store feature. But we don't have time to add relevant metrics to M70. Would you be ok if we run 1% experiment with old cookie store in M71 (after actually launching the feature)?

Also logging open in requires fixing it's failure detection. check  crbug.com/892211 

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/d469a9b6d664d7581e122329cc70fd1ed56c53f6

commit d469a9b6d664d7581e122329cc70fd1ed56c53f6
Author: mrefaat <mrefaat@chromium.org>
Date: Fri Oct 05 21:59:17 2018

Add logging to OpenIn feature.

Detect download failure when a corrupted PDF was downloaded and log the
OpenIn download result in all cases.

Bug:  888545 
Cq-Include-Trybots: luci.chromium.try:ios-simulator-cronet;luci.chromium.try:ios-simulator-full-configs
Change-Id: I19eefd9c1b6da0c9d6b18bfcc0f3953fb33ef391
Reviewed-on: https://chromium-review.googlesource.com/c/1259295
Reviewed-by: Eugene But <eugenebut@chromium.org>
Reviewed-by: Mark Pearson <mpearson@chromium.org>
Commit-Queue: Mohammad Refaat <mrefaat@chromium.org>
Cr-Commit-Position: refs/heads/master@{#597328}
[modify] https://crrev.com/d469a9b6d664d7581e122329cc70fd1ed56c53f6/ios/chrome/browser/ui/open_in_controller.h
[modify] https://crrev.com/d469a9b6d664d7581e122329cc70fd1ed56c53f6/ios/chrome/browser/ui/open_in_controller.mm
[modify] https://crrev.com/d469a9b6d664d7581e122329cc70fd1ed56c53f6/ios/chrome/browser/ui/open_in_controller_unittest.mm
[modify] https://crrev.com/d469a9b6d664d7581e122329cc70fd1ed56c53f6/tools/metrics/histograms/enums.xml
[modify] https://crrev.com/d469a9b6d664d7581e122329cc70fd1ed56c53f6/tools/metrics/histograms/histograms.xml

[Auto-generated comment by a script] We noticed that this issue is targeted for M-71; it appears the fix may have landed after branch point, meaning a merge might be required. Please confirm if a merge is required here - if so add Merge-Request-71 label, otherwise remove Merge-TBD label. Thanks.

Branch was on Oct 11 - CL was sent on OCT 5 so it's on the branch already.