Thanks for filing the issue!

Unable to reproduce the issue on reported chrome version 70.0.3503.1 using Windows 10 with the below mentioned steps.
1. Launched chrome
2. Right clicked on a random image on web
3. Clicked ""Save Image As"" -> Save
Image saved successfully with out any issues. 

@Reporter: Could you please let us know if this issue is seen on every image on web or any specific site, any further inputs from your end helps us to triage the issue further in a better way.

This error occurs for me on all web pages, and for all images. I've tried several different sites like Google Image, Unsplash, and social media sites as well and always gives the same error.

I will also try uninstalling/re-installing Canary.

Thank you for providing more feedback. Adding the requester to the cc list.

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

I did an uninstall/re-install and it seems to have fixed the issue.

I reinstalled to this version: Version 70.0.3504.0 (Official Build) canary (64-bit)

One thing to note is that this issue started occurring after an update to Canary.

@Reporter: From comment#5 clean installation (i.e., uninstall/re-install) of chrome has fixed the issue, Could you please let us know if we can close this issue.

Thanks!

Yes! The issue can be closed. Thank you.

Thank you for providing more feedback. Adding the requester to the cc list.

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

As per the confirmation given in comment#7 closing this issue and marking it as Won't fix. Removing Needs-Bisect label.

Thanks!