stevenjb@ Is this issue seen on 61 and 62? or just 61? reveman@ do you have any CLs in progress for this issue?

mmanchala@, thank you for reporting the issue. I've uploaded a fix for this here: https://chromium-review.googlesource.com/c/chromium/src/+/641617

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/31bcd3433529c16f7619b140aa0f1ee530bf0222

commit 31bcd3433529c16f7619b140aa0f1ee530bf0222
Author: David Reveman <reveman@chromium.org>
Date: Wed Aug 30 17:50:41 2017

Change Picture: Fix rendering glitch for picture list scrolling.

Use static instead of relative position for iron-icon elements.

Relative position is causing these elements to be promoted to
layers on the change picture page where an ancestor has an
absolute position. The overflow-y property is for some reason
not handled by the compositor when accelerating scrolling of
child layers so we often see a few frames of the element outside
the overflow region before main thread gets a chance to update
the contents.

Not having these layers promoted to layers is desirable in general
and it happens to also avoid this rendering glitch.

Bug:  760003 
Test: manual

Cq-Include-Trybots: master.tryserver.chromium.linux:closure_compilation
Change-Id: I759c065dc3ec9ef91ba368526af8387f55a685bd
Reviewed-on: https://chromium-review.googlesource.com/641617
Reviewed-by: Steven Bennetts <stevenjb@chromium.org>
Commit-Queue: David Reveman <reveman@chromium.org>
Cr-Commit-Position: refs/heads/master@{#498530}
[modify] https://crrev.com/31bcd3433529c16f7619b140aa0f1ee530bf0222/ui/webui/resources/cr_elements/chromeos/cr_picture/cr_picture_list.html

This bug requires manual review: We are only 5 days from stable.
Please contact the milestone owner if you have questions.
Owners: amineer@(Android), cmasso@(iOS), ketakid@(ChromeOS), govind@(Desktop)

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

Approving merge to M61.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/b5863ea7cff0392e8c7aa23734bfe94e00f2ff83

commit b5863ea7cff0392e8c7aa23734bfe94e00f2ff83
Author: David Reveman <reveman@chromium.org>
Date: Wed Aug 30 23:47:14 2017

Change Picture: Fix rendering glitch for picture list scrolling.

Use static instead of relative position for iron-icon elements.

Relative position is causing these elements to be promoted to
layers on the change picture page where an ancestor has an
absolute position. The overflow-y property is for some reason
not handled by the compositor when accelerating scrolling of
child layers so we often see a few frames of the element outside
the overflow region before main thread gets a chance to update
the contents.

Not having these layers promoted to layers is desirable in general
and it happens to also avoid this rendering glitch.

Bug:  760003 
Test: manual

TBR=reveman@chromium.org

(cherry picked from commit 31bcd3433529c16f7619b140aa0f1ee530bf0222)

Cq-Include-Trybots: master.tryserver.chromium.linux:closure_compilation
Change-Id: I759c065dc3ec9ef91ba368526af8387f55a685bd
Reviewed-on: https://chromium-review.googlesource.com/641617
Reviewed-by: Steven Bennetts <stevenjb@chromium.org>
Commit-Queue: David Reveman <reveman@chromium.org>
Cr-Original-Commit-Position: refs/heads/master@{#498530}
Reviewed-on: https://chromium-review.googlesource.com/644529
Reviewed-by: David Reveman <reveman@chromium.org>
Cr-Commit-Position: refs/branch-heads/3163@{#1018}
Cr-Branched-From: ff259bab28b35d242e10186cd63af7ed404fae0d-refs/heads/master@{#488528}
[modify] https://crrev.com/b5863ea7cff0392e8c7aa23734bfe94e00f2ff83/ui/webui/resources/cr_elements/chromeos/cr_picture/cr_picture_list.html