@bettes: The dialog spec mentions 512px only for min-width, but it does not mention anything for max-width. Is this a spec change that should be applied to all dialogs? Then this is not just for the reset dialog, for example here are two more dialogs that are wider than 512px http://imgur.com/a/b2Adg (535px and 560px).

Regarding the reset dialog itself, making it max-width of 512px causes the "View reported settings" link to wrap around in a weird way, see http://imgur.com/a/EPxvF. Is that OK?

 Issue 619766  has been merged into this issue.

You can consider 512px to be a fixed dialog width for all settings related UIs, so it should apply to all the UIs in question. 

For the reset dialog, the screenshot shows some additional concerns: 

1. update width to 512px
2. all text links should use google blue 700 and no text decoration
3. Shorten footer string to be: "Make Chrome better by reporting current settings. View report"
4. Update footer style to be white with 1px #000 rule line (same as CBD)
5. Ensure there's 16px of padding below and above the footer string. If text overflows to a second line, the rule should still apply. The text should also respect the left-indention and be left-aligned to the text, not the checkbox. 

Updated mock: 
https://folio.googleplex.com/chrome-ux-specs-and-sources/Chrome%20Inner%20Pages/03-Settings/preview/cards#%2FPREVIEW-Reset.png%3Fz=width

 Issue 640090  has been merged into this issue.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/70e75e2c17355305e719485d68c027f9aac7eaf9

commit 70e75e2c17355305e719485d68c027f9aac7eaf9
Author: dbeam <dbeam@chromium.org>
Date: Tue Jan 10 19:14:19 2017

MD WebUI: change all <dialog is="cr-dialog"> to 512px width

This should narrow some dialogs in settings, and have no functional
affect on history.

R=dpapad@chromium.org
BUG= 640092 
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:closure_compilation

Review-Url: https://codereview.chromium.org/2623673003
Cr-Commit-Position: refs/heads/master@{#442649}

[modify] https://crrev.com/70e75e2c17355305e719485d68c027f9aac7eaf9/chrome/browser/resources/md_history/lazy_load.vulcanized.html
[modify] https://crrev.com/70e75e2c17355305e719485d68c027f9aac7eaf9/chrome/browser/resources/settings/about_page/channel_switcher_dialog.html
[modify] https://crrev.com/70e75e2c17355305e719485d68c027f9aac7eaf9/chrome/browser/resources/settings/clear_browsing_data_dialog/clear_browsing_data_dialog.html
[modify] https://crrev.com/70e75e2c17355305e719485d68c027f9aac7eaf9/chrome/browser/resources/settings/clear_browsing_data_dialog/history_deletion_dialog.html
[modify] https://crrev.com/70e75e2c17355305e719485d68c027f9aac7eaf9/chrome/browser/resources/settings/device_page/drive_cache_dialog.html
[modify] https://crrev.com/70e75e2c17355305e719485d68c027f9aac7eaf9/chrome/browser/resources/settings/printing_page/cups_add_printer_dialog_util.html
[modify] https://crrev.com/70e75e2c17355305e719485d68c027f9aac7eaf9/ui/webui/resources/cr_elements/cr_dialog/cr_dialog.html