Raising a new feature request as per the comment #6 and #9 in http://crbug/857088

App Version: 69.0.3482.0 Canary
iOS Version: 10.3.3, 11.4.1 beta 3, 11.4
Device: iPhone and iPad 

Steps to reproduce:
1. Fresh install chrome and Launch chrome
2. Browse through few sites
3. Open History and tap on edit button
4. Search for the website which is already browsed in history search
5. Select the item from the results
6. Search for another website and select the items from the result
7. Dismiss the search by tapping on cancel button 

Observed results:
Notice that selected history item at step 4 deselected on selecting new history item at step 6

Expected results:
Using history search should allow to select multiple history items

Link to video:
https://drive.google.com/file/d/1ly7M_PrS8Hvc7M4eO5-LAZMnzJKYMGh_/view?usp=sharing