The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/801a08e5ea506ef84a701260856ad34e5c50065a

commit 801a08e5ea506ef84a701260856ad34e5c50065a
Author: Pedro Amaral <amaralp@chromium.org>
Date: Wed Dec 19 01:18:05 2018

Make Duet IPH 10 seconds instead of 6

Bug:  916309 
Change-Id: Idc888ec45a4dec4eb160884946fa33682f1a214c
Reviewed-on: https://chromium-review.googlesource.com/c/1383357
Reviewed-by: Theresa <twellington@chromium.org>
Commit-Queue: Pedro Amaral <amaralp@chromium.org>
Cr-Commit-Position: refs/heads/master@{#617703}
[modify] https://crrev.com/801a08e5ea506ef84a701260856ad34e5c50065a/chrome/android/java/src/org/chromium/chrome/browser/toolbar/bottom/BrowsingModeBottomToolbarMediator.java

Requesting merge. This is a very safe change as all it does is change the IPH duration from 6 to 10 seconds. Also the change will only happen to the bottom toolbar experiment which is behind a flag.

This bug requires manual review: M72 has already been promoted to the beta branch, so this requires manual review
Please contact the milestone owner if you have questions.
Owners: govind@(Android), kariahda@(iOS), djmm@(ChromeOS), abdulsyed@(Desktop)

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

Pls update bug with canary result tomorrow. 

The NextAction date has arrived: 2018-12-19

How is the change looking in canary?Is it safe to merge now?

Everything looks good in Canary. Safe to merge

Approving merge to M72 branch 3626 based on comment #7. Please merge ASAP, Thank you.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/fcb1d6602aa5d44ff4cc70775e48fcd13e4210df

commit fcb1d6602aa5d44ff4cc70775e48fcd13e4210df
Author: Pedro Amaral <amaralp@chromium.org>
Date: Wed Dec 19 19:51:05 2018

Make Duet IPH 10 seconds instead of 6

Bug:  916309 
Change-Id: Idc888ec45a4dec4eb160884946fa33682f1a214c
Reviewed-on: https://chromium-review.googlesource.com/c/1383357
Reviewed-by: Theresa <twellington@chromium.org>
Commit-Queue: Pedro Amaral <amaralp@chromium.org>
Cr-Original-Commit-Position: refs/heads/master@{#617703}(cherry picked from commit 801a08e5ea506ef84a701260856ad34e5c50065a)
Reviewed-on: https://chromium-review.googlesource.com/c/1384936
Reviewed-by: Pedro Amaral <amaralp@chromium.org>
Cr-Commit-Position: refs/branch-heads/3626@{#468}
Cr-Branched-From: d897fb137fbaaa9355c0c93124cc048824eb1e65-refs/heads/master@{#612437}
[modify] https://crrev.com/fcb1d6602aa5d44ff4cc70775e48fcd13e4210df/chrome/android/java/src/org/chromium/chrome/browser/toolbar/bottom/BrowsingModeBottomToolbarMediator.java

The following revision refers to this bug: 
https://chromium.googlesource.com/chromium/src.git/+/fcb1d6602aa5d44ff4cc70775e48fcd13e4210df

Commit: fcb1d6602aa5d44ff4cc70775e48fcd13e4210df
Author: amaralp@chromium.org
Commiter: amaralp@chromium.org
Date: 2018-12-19 19:51:05 +0000 UTC

Make Duet IPH 10 seconds instead of 6

Bug:  916309 
Change-Id: Idc888ec45a4dec4eb160884946fa33682f1a214c
Reviewed-on: https://chromium-review.googlesource.com/c/1383357
Reviewed-by: Theresa <twellington@chromium.org>
Commit-Queue: Pedro Amaral <amaralp@chromium.org>
Cr-Original-Commit-Position: refs/heads/master@{#617703}(cherry picked from commit 801a08e5ea506ef84a701260856ad34e5c50065a)
Reviewed-on: https://chromium-review.googlesource.com/c/1384936
Reviewed-by: Pedro Amaral <amaralp@chromium.org>
Cr-Commit-Position: refs/branch-heads/3626@{#468}
Cr-Branched-From: d897fb137fbaaa9355c0c93124cc048824eb1e65-refs/heads/master@{#612437}

Verified with M73 -73.0.3659.0/HTC10/8.0. Now Duet duration time is increased to 10 seconds

Re-tested same with M72-ChromeBeta-72.0.3626.53 build and not displayed IPH help text,when first time the app is started.
Enabled below flags
Chrome Duet
In-Product Help Demo Mode -Enabled IPH_ChromeDuet