Note: We should use the FeatureState provided by the MultiDeviceSetup service; no code should depend directly on any preference. I am currently working on a fix for issue 875980, which should make it much easier for you to grab the current FeatureState.

Only request a merge once your CL has landed.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/a9e207bae1ee3a35d46282e69bba9843ebdc9d84

commit a9e207bae1ee3a35d46282e69bba9843ebdc9d84
Author: Azeem Arshad <azeemarshad@chromium.org>
Date: Fri Sep 07 02:17:13 2018

[AndroidSmsService] Gate connection establishing with multidevice feature state.

This change adds logic to retrieve and listen for changes in multidevice
feature state and enables/disables establishing background connection from
service worker approriately.

Bug:  876163 
Change-Id: I593a27f46a793678039ca40a1d0e49e97152c616
Reviewed-on: https://chromium-review.googlesource.com/1208143
Reviewed-by: Kinuko Yasuda <kinuko@chromium.org>
Reviewed-by: Jeremy Klein <jlklein@chromium.org>
Reviewed-by: Ryan Hansberry <hansberry@chromium.org>
Commit-Queue: Azeem Arshad <azeemarshad@chromium.org>
Cr-Commit-Position: refs/heads/master@{#589411}
[modify] https://crrev.com/a9e207bae1ee3a35d46282e69bba9843ebdc9d84/chrome/browser/chromeos/android_sms/BUILD.gn
[modify] https://crrev.com/a9e207bae1ee3a35d46282e69bba9843ebdc9d84/chrome/browser/chromeos/android_sms/android_sms_service.cc
[modify] https://crrev.com/a9e207bae1ee3a35d46282e69bba9843ebdc9d84/chrome/browser/chromeos/android_sms/android_sms_service_factory.cc
[modify] https://crrev.com/a9e207bae1ee3a35d46282e69bba9843ebdc9d84/chrome/browser/chromeos/android_sms/connection_manager.cc
[modify] https://crrev.com/a9e207bae1ee3a35d46282e69bba9843ebdc9d84/chrome/browser/chromeos/android_sms/connection_manager.h
[modify] https://crrev.com/a9e207bae1ee3a35d46282e69bba9843ebdc9d84/chrome/browser/chromeos/android_sms/connection_manager_unittest.cc
[modify] https://crrev.com/a9e207bae1ee3a35d46282e69bba9843ebdc9d84/content/public/test/fake_service_worker_context.cc
[modify] https://crrev.com/a9e207bae1ee3a35d46282e69bba9843ebdc9d84/content/public/test/fake_service_worker_context.h

Your change meets the bar and is auto-approved for M70. Please go ahead and merge the CL to branch 3538 manually. Please contact milestone owner if you have questions.
Owners: benmason@(Android), kariahda@(iOS), geohsu@(ChromeOS), abdulsyed@(Desktop)

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

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/cde98874e31bd0204bb54ebcb56ba9e8f39c1118

commit cde98874e31bd0204bb54ebcb56ba9e8f39c1118
Author: Azeem Arshad <azeemarshad@chromium.org>
Date: Sat Sep 08 02:51:30 2018

[AndroidSmsService] Gate connection establishing with multidevice feature state.

This change adds logic to retrieve and listen for changes in multidevice
feature state and enables/disables establishing background connection from
service worker approriately.

Bug:  876163 
Change-Id: I593a27f46a793678039ca40a1d0e49e97152c616
Reviewed-on: https://chromium-review.googlesource.com/1208143
Reviewed-by: Kinuko Yasuda <kinuko@chromium.org>
Reviewed-by: Jeremy Klein <jlklein@chromium.org>
Reviewed-by: Ryan Hansberry <hansberry@chromium.org>
Commit-Queue: Azeem Arshad <azeemarshad@chromium.org>
Cr-Original-Commit-Position: refs/heads/master@{#589411}(cherry picked from commit a9e207bae1ee3a35d46282e69bba9843ebdc9d84)
Reviewed-on: https://chromium-review.googlesource.com/1214760
Cr-Commit-Position: refs/branch-heads/3538@{#183}
Cr-Branched-From: 79f7c91a2b2a2932cd447fa6f865cb6662fa8fa6-refs/heads/master@{#587811}
[modify] https://crrev.com/cde98874e31bd0204bb54ebcb56ba9e8f39c1118/chrome/browser/chromeos/android_sms/BUILD.gn
[modify] https://crrev.com/cde98874e31bd0204bb54ebcb56ba9e8f39c1118/chrome/browser/chromeos/android_sms/android_sms_service.cc
[modify] https://crrev.com/cde98874e31bd0204bb54ebcb56ba9e8f39c1118/chrome/browser/chromeos/android_sms/android_sms_service_factory.cc
[modify] https://crrev.com/cde98874e31bd0204bb54ebcb56ba9e8f39c1118/chrome/browser/chromeos/android_sms/connection_manager.cc
[modify] https://crrev.com/cde98874e31bd0204bb54ebcb56ba9e8f39c1118/chrome/browser/chromeos/android_sms/connection_manager.h
[modify] https://crrev.com/cde98874e31bd0204bb54ebcb56ba9e8f39c1118/chrome/browser/chromeos/android_sms/connection_manager_unittest.cc
[modify] https://crrev.com/cde98874e31bd0204bb54ebcb56ba9e8f39c1118/content/public/test/fake_service_worker_context.cc
[modify] https://crrev.com/cde98874e31bd0204bb54ebcb56ba9e8f39c1118/content/public/test/fake_service_worker_context.h