Here are the sizes of all PNGs with "notification" in their name under chrome/app. (It looks like there are twice-as-large 200% images for all of these, so I'm leaving 200% out of the list.)

chrome/app/theme/default_100_percent/legacy/infobar_desktop_notifications.png            18x18 (mac-only)
chrome/app/theme/default_100_percent/cros/notification_screenshot_copy_to_clipboard.png  24x24 (button)
chrome/app/theme/default_100_percent/cros/notification_peripheral_battery_low.png        40x40
chrome/app/theme/default_100_percent/cros/notification_drive.png                         40x40
chrome/app/theme/default_100_percent/cros/consumer_management_notification_icon.png      40x40
chrome/app/theme/default_100_percent/cros/notification_play_store.png                    40x40
chrome/app/theme/default_100_percent/cros/printer_notification.png                       48x48
chrome/app/theme/default_100_percent/common/notification_screenshot_icon.png             40x40
chrome/app/theme/default_100_percent/common/notification_alert.png                       80x80
chrome/app/theme/default_100_percent/common/notification_welcome_icon.png                80x80
chrome/app/theme/default_100_percent/common/allowed_notifications.png                    19x19 (webui)
chrome/app/theme/default_100_percent/common/notification_usb_icon.png                    80x80
chrome/app/theme/default_100_percent/common/notification_hotword_icon.png                80x80
chrome/app/theme/default_100_percent/common/blocked_notifications.png                    19x19 (webui)
chrome/app/theme/default_100_percent/common/notification_welcome_learn_more.png          16x16 (button)
chrome/app/theme/default_100_percent/common/notification_extension_installed.png         80x80
chrome/app/theme/default_100_percent/screen_capture_notification_grip.png                6x11  (used in custom view)

I think that 80x80 is the correct size for the large icons that appear at the left side of the notifications, which many of these are.

----

So these should probably be 80x80 instead:

cros/notification_peripheral_battery_low.png
cros/notification_drive.png
cros/consumer_management_notification_icon.png
cros/notification_play_store.png
cros/printer_notification.png
common/notification_screenshot_icon.png

---

This is the only action icon that looks like it needs to be resized to 16x16:

cros/notification_screenshot_copy_to_clipboard.png

---

I didn't look at the image content to see if any of these have the same color issue that I described for notification_screenshot_copy_to_clipboard.png.

On issue 633600, you wrote "I checked with Sebastien and he mentioned that the icons should be at 16 at 1x and in svg format."

Just to clarify, I don't think that any of these are shipped as SVG. We convert to transparent PNGs before checking them in to the tree. Agree that it sounds reasonable to keep these as SVGs on the UX side, though. :-)

Yes I see what you are saying. Please let me know if it's possible to get the list of all the other notification action icons that we should update. 

List is in comment #1. I don't see any other problematic action icons but there are a bunch of main notification icons that are too small.

Are you talking about these icons? Would you mind to show me a screenshot of how small they are looking now?

https://drive.google.com/corp/drive/u/0/folders/0B_2Uyb2Rhx2OYkpDNHUwako4VHc
https://bugs.chromium.org/p/chromium/issues/detail?id=619085

Thanks,
Elizabeth

Deleted: Cros system notifications.jpg 966 KB

	Cros system notifications.jpg 966 KB View Download

Here are the 100% images that seem like they should be 80x80.

I don't think they'll occur at their original sizes in the UI. Instead, they'll be scaled up and blurry.

Deleted: consumer_management_notification_icon.png 433 bytes

	consumer_management_notification_icon.png 433 bytes View Download

Deleted: notification_drive.png 2.0 KB

	notification_drive.png 2.0 KB View Download

Deleted: notification_peripheral_battery_low.png 155 bytes

	notification_peripheral_battery_low.png 155 bytes View Download

Deleted: notification_play_store.png 1.2 KB

	notification_play_store.png 1.2 KB View Download

Deleted: notification_screenshot_icon.png 194 bytes

	notification_screenshot_icon.png 194 bytes View Download

Deleted: printer_notification.png 213 bytes

	printer_notification.png 213 bytes View Download

System notification is moving to vector icons (crbug.com/619085), and we should avoid png unless there is a good reason. Please contact oshima@ or tdanderson@ as they know more about this. 

Also the icons you have attached some assets are already updated in 80x80 svg format, but the rest of them I didn't get the bug/request. That's why they are not created in the right size and format.

notification_peripheral_battery_low:
https://drive.google.com/a/google.com/file/d/0B_2Uyb2Rhx2ORzc5N1Y5X0NVMzg/view

notification_screenshot:
https://drive.google.com/a/google.com/file/d/0B_2Uyb2Rhx2OUU9aTGtQOThFU1E/view

this is for chrome web store, do we need a new one for play store?:
https://drive.google.com/a/google.com/file/d/0B_2Uyb2Rhx2OUHgxdUxlbVpaU2M/view

printer_notification:
https://drive.google.com/corp/drive/u/0/folders/0B_2Uyb2Rhx2OZGFaQ1RoVWc2Y1E
(These are created much earlier so they are still in png) I will update these files to SVG format soon.

I'll let Oshima or Terry comment here, as I haven't noticed any vector assets in the tree or announcements about this on chromium-dev.

Re #8, we started switching all icons over to vector format during the top chrome material design work. You can see them in ui/gfx/vector_icons (note the files themselves are derived from SVGs but are not actually in .svg format). More details are at https://sites.google.com/a/chromium.org/dev/developers/how-tos/vectorized-icons-in-native-chrome-ui

PNGs will still need to be used for complex multi-colored product icons such as the ones for Drive or Play Store.

Thanks for the details! I left a comment on issue 606819 -- I'm happy to help out with updating some of these if we have vector versions. I assume we should use the spreadsheet for tracking.

Elizabeth sent me updated icons; attaching here. Thanks!

Deleted: copy_100.png 286 bytes

	copy_100.png 286 bytes View Download

Deleted: copy_200.png 544 bytes

	copy_200.png 544 bytes View Download

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/7a10475cca111130fbecb654ec34df670725c051

commit 7a10475cca111130fbecb654ec34df670725c051
Author: derat <derat@chromium.org>
Date: Fri Aug 05 23:41:43 2016

chromeos: Fix download/screenshot "Copy to clipboard" icons.

Update the icons used in download and screenshot
notifications' "Copy to clipboard" buttons to be the same
size (16x16) and color (#969696) as other notification
button icons.

BUG= 633799 

Review-Url: https://codereview.chromium.org/2217333002
Cr-Commit-Position: refs/heads/master@{#410213}

[modify] https://crrev.com/7a10475cca111130fbecb654ec34df670725c051/chrome/app/theme/default_100_percent/cros/downloads/copy_to_clipboard.png
[modify] https://crrev.com/7a10475cca111130fbecb654ec34df670725c051/chrome/app/theme/default_100_percent/cros/notification_screenshot_copy_to_clipboard.png
[modify] https://crrev.com/7a10475cca111130fbecb654ec34df670725c051/chrome/app/theme/default_200_percent/cros/downloads/copy_to_clipboard.png
[modify] https://crrev.com/7a10475cca111130fbecb654ec34df670725c051/chrome/app/theme/default_200_percent/cros/notification_screenshot_copy_to_clipboard.png

The clipboard icons are fixed now, so I'm closing this. I'll use issue 606819 to track fixing the other issues from comment #1.