Updated notification specs per conversation with Shiba:

We should keep the existing icons on the left side and update the text as follows -


1. In Progress
Title: Now printing [document name/website]
Description: [# of pages] page(s) to [Printer Name]
(Keep progress bar below the Description)

2. Error
Title: Error printing [document name/website] 
Description: [# of pages] page(s) to [Printer Name]

3. Success
Title: Successfully printed [document name/website]
Description: [# of pages] page(s) to [Printer Name]

Also, xdai@ - Do you know what the character limit for truncating is (accounting for internationalization of the text)? 

 Issue 714701  has been merged into this issue.

weifangsun@, the character limit is calculated by (notification width in pixels per line) * (line limit) / (min. pixels per character).

For notification title, the character limit is 180 characters. And for notification description, the character limit is either 600 characters (if title has 0 or 1 line) or 360 characters (if title has 2 lines).

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/bb457134c0afdd23c2547993b9843f4d30594a65

commit bb457134c0afdd23c2547993b9843f4d30594a65
Author: xdai <xdai@chromium.org>
Date: Tue May 09 03:50:30 2017

[CUPS] Update UI for CUPS printing notifications.

BUG= 717587 

Review-Url: https://codereview.chromium.org/2872733002
Cr-Commit-Position: refs/heads/master@{#470168}

[modify] https://crrev.com/bb457134c0afdd23c2547993b9843f4d30594a65/chrome/app/chromeos_strings.grdp
[modify] https://crrev.com/bb457134c0afdd23c2547993b9843f4d30594a65/chrome/browser/chromeos/printing/cups_print_job_notification.cc