(mouse will also have a speed slider, so that's 2 settings.)

1. Let's display Mouse first. I've updated the specs for subpages and sub-headers

2. If only one pointer is attached, it'd be great if we could remove the sub-headers. That's the ideal at least. 

** I realize there's some open questions about sliders so just use the same slider as touchpad for now. 

Specs
https://folio.googleplex.com/chrome-ux-specs-and-sources/Chrome%20Inner%20Pages/03-Settings/specs#%2FSPEC-settings_structure-subpage.png

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

Deleted: Screen Shot 2016-05-26 at 12.55.20 PM.png 60.9 KB

	Screen Shot 2016-05-26 at 12.55.20 PM.png 60.9 KB View Download

Great, thanks Alan!

screenshots attached. I don't have the scrolling radio buttons indented yet, although it's unclear whether we still want that.

Also, much of the page doesn't look great when it's this wide, see  issue 622454 .

Deleted: pointers.png 51.8 KB

	pointers.png 51.8 KB View Download

Deleted: pointers-mouse-only.png 38.7 KB

	pointers-mouse-only.png 38.7 KB View Download

Deleted: pointers-touchpad-only.png 44.9 KB

	pointers-touchpad-only.png 44.9 KB View Download

Looks good! A couple comments:
1) It looks like the sliders may need to be updated to match the spec described in  Issue 598879 .
2) I defer to Alan, but I think keeping the radios for "scrolling" unindented in both cases would look fine. Regardless, very happy that we don't get the double-indentation when it's mouse/trackpad settings.

Thanks Tom! Yes, this uses the same styling we have elsewhere. We'll go through all the sliders in one pass to conform to  issue 598879 .

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/e6d83603c47a932ea7d4822dd65442456ee26280

commit e6d83603c47a932ea7d4822dd65442456ee26280
Author: michaelpg <michaelpg@chromium.org>
Date: Tue Jul 19 20:17:20 2016

add aria-labelledby to options device sliders

Not doing so yields accessibility errors in browser tests when a
mouse or touchpad are present (as they will be once enabling fake
pointers in crrev.com/2006083002)

R=stevenjb@chromium.org
BUG= 612986 
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:closure_compilation

Review-Url: https://codereview.chromium.org/2161183002
Cr-Commit-Position: refs/heads/master@{#406365}

[modify] https://crrev.com/e6d83603c47a932ea7d4822dd65442456ee26280/chrome/browser/resources/options/browser_options.html

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/fe807f4f43fc317d93df7a8e48a7c62caf42fb4b

commit fe807f4f43fc317d93df7a8e48a7c62caf42fb4b
Author: michaelpg <michaelpg@chromium.org>
Date: Tue Jul 19 22:16:38 2016

MD Settings: Add mouse settings, update pointer settings

Adds mouse settings and touchpad sensitivity settings.

Updates the pointer icon and title in the device page based on whether a
mouse, touchpad, or both are connected. Shows headers separating the
mouse and touchpad sections on the pointers subpage when both are visible.

If the subpage is open and all mice/touchpads are disconnected, the subpage
closes.

Also address some flakiness I found in the tests.

Screenshots in the bug.

BUG= 612986 , 598901 
R=stevenjb@chromium.org
CQ_INCLUDE_TRYBOTS=tryserver.chromium.linux:closure_compilation;master.tryserver.chromium.linux:closure_compilation

Review-Url: https://codereview.chromium.org/2110833003
Cr-Commit-Position: refs/heads/master@{#406396}

[modify] https://crrev.com/fe807f4f43fc317d93df7a8e48a7c62caf42fb4b/chrome/app/settings_strings.grdp
[modify] https://crrev.com/fe807f4f43fc317d93df7a8e48a7c62caf42fb4b/chrome/browser/extensions/api/settings_private/prefs_util.cc
[modify] https://crrev.com/fe807f4f43fc317d93df7a8e48a7c62caf42fb4b/chrome/browser/resources/settings/device_page/compiled_resources2.gyp
[modify] https://crrev.com/fe807f4f43fc317d93df7a8e48a7c62caf42fb4b/chrome/browser/resources/settings/device_page/device_page.html
[modify] https://crrev.com/fe807f4f43fc317d93df7a8e48a7c62caf42fb4b/chrome/browser/resources/settings/device_page/device_page.js
[modify] https://crrev.com/fe807f4f43fc317d93df7a8e48a7c62caf42fb4b/chrome/browser/resources/settings/device_page/device_page_browser_proxy.js
[add] https://crrev.com/fe807f4f43fc317d93df7a8e48a7c62caf42fb4b/chrome/browser/resources/settings/device_page/pointers.html
[add] https://crrev.com/fe807f4f43fc317d93df7a8e48a7c62caf42fb4b/chrome/browser/resources/settings/device_page/pointers.js
[delete] https://crrev.com/5aa2d8c58b4dbb74437652c32dcdfec5a323db44/chrome/browser/resources/settings/device_page/touchpad.html
[delete] https://crrev.com/5aa2d8c58b4dbb74437652c32dcdfec5a323db44/chrome/browser/resources/settings/device_page/touchpad.js
[modify] https://crrev.com/fe807f4f43fc317d93df7a8e48a7c62caf42fb4b/chrome/browser/resources/settings/icons.html
[modify] https://crrev.com/fe807f4f43fc317d93df7a8e48a7c62caf42fb4b/chrome/browser/resources/settings/route.js
[modify] https://crrev.com/fe807f4f43fc317d93df7a8e48a7c62caf42fb4b/chrome/browser/resources/settings/settings_resources.grd
[add] https://crrev.com/fe807f4f43fc317d93df7a8e48a7c62caf42fb4b/chrome/browser/ui/webui/settings/chromeos/device_pointer_handler.cc
[add] https://crrev.com/fe807f4f43fc317d93df7a8e48a7c62caf42fb4b/chrome/browser/ui/webui/settings/chromeos/device_pointer_handler.h
[modify] https://crrev.com/fe807f4f43fc317d93df7a8e48a7c62caf42fb4b/chrome/browser/ui/webui/settings/md_settings_localized_strings_provider.cc
[modify] https://crrev.com/fe807f4f43fc317d93df7a8e48a7c62caf42fb4b/chrome/browser/ui/webui/settings/md_settings_ui.cc
[modify] https://crrev.com/fe807f4f43fc317d93df7a8e48a7c62caf42fb4b/chrome/chrome_browser_ui.gypi
[modify] https://crrev.com/fe807f4f43fc317d93df7a8e48a7c62caf42fb4b/chrome/test/data/webui/settings/cr_settings_browsertest.js
[modify] https://crrev.com/fe807f4f43fc317d93df7a8e48a7c62caf42fb4b/chrome/test/data/webui/settings/device_page_tests.js

Done. Slider consistency tracked in  issue 598879 .