The agreement when Mac signed onto the Harmony project was that Harmony would respect platform casing conventions. You cannot simply decide to undo this bit of compromise that was struck between the Mac platform team and UX.

While it's unpleasant as a Mac user to run across a dialog or control that has incorrect casing, it's much, much worse for all dialogs and controls to altogether disregard this platform convention. Chrome Mac is already a port. This kind of change will only increase its impedance mismatch with the system.

This bug should be marked WontFix.

Per internal discussion, we're moving forward with unifying dialog heading strings as sentence case. This aligns with Mac message style as we're also dictating that these dialogs should have full sentences as their headings. Buttons and menu items will have duplicate .grd entries for now.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/a9899f618e385275abce26fa0988bbb801bff146

commit a9899f618e385275abce26fa0988bbb801bff146
Author: Peter Boström <pbos@chromium.org>
Date: Wed Feb 14 00:01:21 2018

Revert "Add missing titlecase for device-chooser titles."

This reverts commit 200620648d0c09e472eb3a41378ee2ce26bf693e.

Reason for revert: Titlecasing bubble titles is no longer relevant.

Original change's description:
> Add missing titlecase for device-chooser titles.
>
> Adds use_titlecase entries for USB device selection, Bluetooth pairing
> and device permissions.
>
> Bug:  chromium:807886 
> Change-Id: I355d944e151c14967998d283d5ad578ba512ae9d
> Reviewed-on: https://chromium-review.googlesource.com/898246
> Reviewed-by: Istiaque Ahmed <lazyboy@chromium.org>
> Commit-Queue: Peter Boström <pbos@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#534561}

TBR=lazyboy@chromium.org,pbos@chromium.org

# Not skipping CQ checks because original CL landed > 1 day ago.

Bug:  chromium:807886 ,  chromium:810111 
Change-Id: Ib23cdfc01cedd382785c0e111faaac2507b1b95e
Reviewed-on: https://chromium-review.googlesource.com/917341
Commit-Queue: Peter Boström <pbos@chromium.org>
Reviewed-by: Bret Sepulveda <bsep@chromium.org>
Cr-Commit-Position: refs/heads/master@{#536560}
[modify] https://crrev.com/a9899f618e385275abce26fa0988bbb801bff146/chrome/app/generated_resources.grd
[modify] https://crrev.com/a9899f618e385275abce26fa0988bbb801bff146/extensions/strings/extensions_strings.grd

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/9074255377636e080f441d44ff83ccc851f0c1e1

commit 9074255377636e080f441d44ff83ccc851f0c1e1
Author: Peter Boström <pbos@chromium.org>
Date: Wed Feb 14 22:47:28 2018

Unify dialog titles in generated_resources.grd

Turns most dialog titles in generated_resources.grd into sentence case
on all platforms. Password ones aren't touched yet as they require
approvals for reverting a test check that verifies that "This Site" is
present in the resulting string.

Bug:  chromium:810111 
Change-Id: I94be076df5078c96e2dc700581dc50db2afda177
Reviewed-on: https://chromium-review.googlesource.com/917649
Commit-Queue: Peter Boström <pbos@chromium.org>
Reviewed-by: Elly Fong-Jones <ellyjones@chromium.org>
Cr-Commit-Position: refs/heads/master@{#536856}
[modify] https://crrev.com/9074255377636e080f441d44ff83ccc851f0c1e1/chrome/app/generated_resources.grd

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/289e5a211c75b3c55389184116d793863ddec5ec

commit 289e5a211c75b3c55389184116d793863ddec5ec
Author: Peter Boström <pbos@chromium.org>
Date: Thu Feb 15 01:02:41 2018

Use sentence case for JS app-modal bubble titles

Covers widget dialog title sentence case for app_modal_strings.grdp.

This reverts the dialog titles to pre-titlecase "www.google.com says"
since this no longer looks wonky when there's no titlecase version of
it.

Bug:  chromium:810111 
Change-Id: I5f72d704629dfc1da1522c4a34707c5864a44947
Reviewed-on: https://chromium-review.googlesource.com/917467
Commit-Queue: Peter Boström <pbos@chromium.org>
Reviewed-by: Avi Drissman <avi@chromium.org>
Cr-Commit-Position: refs/heads/master@{#536911}
[modify] https://crrev.com/289e5a211c75b3c55389184116d793863ddec5ec/components/app_modal/javascript_dialog_manager_unittest.cc
[modify] https://crrev.com/289e5a211c75b3c55389184116d793863ddec5ec/components/app_modal_strings.grdp

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/90e87f6e4cfbe6580de832c8962b13e6df599a2a

commit 90e87f6e4cfbe6580de832c8962b13e6df599a2a
Author: Peter Boström <pbos@chromium.org>
Date: Thu Feb 15 14:46:40 2018

Make UX-requested changes to JS app-modal titles

Also updates the desc of IDS_BEFOREUNLOAD_MESSAGEBOX_MESSAGE to make
the context clearer.

Bug:  chromium:810111 
Change-Id: I21f8022eb1e2c71eec68e17d33d45693dad11e7e
Reviewed-on: https://chromium-review.googlesource.com/920787
Reviewed-by: Avi Drissman <avi@chromium.org>
Commit-Queue: Peter Boström <pbos@chromium.org>
Cr-Commit-Position: refs/heads/master@{#537013}
[modify] https://crrev.com/90e87f6e4cfbe6580de832c8962b13e6df599a2a/components/app_modal_strings.grdp

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/7a7e32a3bb3142085386ec7f8e57f8011ad3af02

commit 7a7e32a3bb3142085386ec7f8e57f8011ad3af02
Author: Peter Boström <pbos@chromium.org>
Date: Thu Feb 15 14:47:53 2018

Unify some widget-title strings in chrome/app

Unifies strings for titles as sentence case in bookmark_strings.grdp,
chromium_strings.grd and google_chrome_strings.grd. This intentionally
leaves generated_strings.grd as a separate change as it's expected to be
huge.

Also fixes titlecase style for an existing string.

Bug:  chromium:810111 
Change-Id: I587928b6fd8b30cb040dbbf38dd5a2d7249517d4
Reviewed-on: https://chromium-review.googlesource.com/917216
Reviewed-by: Elly Fong-Jones <ellyjones@chromium.org>
Commit-Queue: Peter Boström <pbos@chromium.org>
Cr-Commit-Position: refs/heads/master@{#537014}
[modify] https://crrev.com/7a7e32a3bb3142085386ec7f8e57f8011ad3af02/chrome/app/bookmarks_strings.grdp
[modify] https://crrev.com/7a7e32a3bb3142085386ec7f8e57f8011ad3af02/chrome/app/chromium_strings.grd
[modify] https://crrev.com/7a7e32a3bb3142085386ec7f8e57f8011ad3af02/chrome/app/google_chrome_strings.grd

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/167fdbd10f70ab135b133c0f7aafc1dc82167186

commit 167fdbd10f70ab135b133c0f7aafc1dc82167186
Author: Peter Boström <pbos@chromium.org>
Date: Thu Feb 15 15:47:39 2018

Update two translate / page-info title strings

These were requested by UX; the translation string is just a shorter
simplification and the page-info string uses a full sentence to match
dialog title style (and the other titles for this bubble).

Bug:  chromium:810111 , chromium:812362
Change-Id: I7e7e166a246423070a0e0b3518a8acc92acabfde
Reviewed-on: https://chromium-review.googlesource.com/920701
Reviewed-by: Patti <patricialor@chromium.org>
Commit-Queue: Peter Boström <pbos@chromium.org>
Cr-Commit-Position: refs/heads/master@{#537026}
[modify] https://crrev.com/167fdbd10f70ab135b133c0f7aafc1dc82167186/chrome/app/generated_resources.grd
[modify] https://crrev.com/167fdbd10f70ab135b133c0f7aafc1dc82167186/components/page_info_strings.grdp

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/77f472e2119a2379ce1a8b0f50e2447e7fd121cd

commit 77f472e2119a2379ce1a8b0f50e2447e7fd121cd
Author: Peter Boström <pbos@chromium.org>
Date: Thu Feb 15 16:10:08 2018

Use titlecase for autofill-bubble titles

Covers widget dialog title sentence case for autofill_strings.grdp.

Bug:  chromium:810111 
Change-Id: I56cbb0188c4af039f35b5ede8f1cc192a9cdc543
Reviewed-on: https://chromium-review.googlesource.com/917432
Reviewed-by: Mathieu Perreault <mathp@chromium.org>
Commit-Queue: Mathieu Perreault <mathp@chromium.org>
Cr-Commit-Position: refs/heads/master@{#537033}
[modify] https://crrev.com/77f472e2119a2379ce1a8b0f50e2447e7fd121cd/components/autofill_strings.grdp

c#1 is addressed via  go/harmony-titlecase-unification-plan (sorry, internal-only)

All involved parties agree that's the proper way to go forward. Short (possibly incomplete) summary: "On macOS, dialog titles as sentences in sentence case, buttons & menu items remain in title case"

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/93eb7c22fc01163cce29b5ef41f9a1f8b23232df

commit 93eb7c22fc01163cce29b5ef41f9a1f8b23232df
Author: Peter Boström <pbos@chromium.org>
Date: Thu Feb 15 18:04:57 2018

Use sentence case for login-dialog title

Covers widget dialog title sentence case for login_dialog_strings.grdp.

UX also requested updates to these strings so those are done as well.

TBR=blundell@chromium.org

Bug:  chromium:810111 , chromium:812362
Change-Id: Ib95706198a0089f1ad479c9efa917f703d9d25bd
Reviewed-on: https://chromium-review.googlesource.com/917402
Reviewed-by: Rachel Blum <groby@chromium.org>
Commit-Queue: Rachel Blum <groby@chromium.org>
Cr-Commit-Position: refs/heads/master@{#537067}
[modify] https://crrev.com/93eb7c22fc01163cce29b5ef41f9a1f8b23232df/components/login_dialog_strings.grdp

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/983bbbe49ecf6736567572d74f1e79478b18c6b9

commit 983bbbe49ecf6736567572d74f1e79478b18c6b9
Author: Peter Boström <pbos@chromium.org>
Date: Fri Feb 16 03:56:01 2018

Use sentence case for bookmark-editor title

Covers widget dialog title sentence case for
bookmark_component_strings.grdp.

TBR=blundell@chromium.org

Bug:  chromium:810111 
Change-Id: I7e0fda476aaaf43d7906a50e302fd4ccc9227142
Reviewed-on: https://chromium-review.googlesource.com/917424
Reviewed-by: Rachel Blum <groby@chromium.org>
Commit-Queue: Peter Boström <pbos@chromium.org>
Cr-Commit-Position: refs/heads/master@{#537186}
[modify] https://crrev.com/983bbbe49ecf6736567572d74f1e79478b18c6b9/components/bookmark_component_strings.grdp

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/09af7df0a82d3612d2c6b8cd2e80ba65f64cbe6c

commit 09af7df0a82d3612d2c6b8cd2e80ba65f64cbe6c
Author: Peter Boström <pbos@chromium.org>
Date: Mon Feb 26 17:51:27 2018

Use sentence case for password-manager bubbles

Removes use_titlecase entries for bubble titles and reverts the
corresponding prior test update. It's not a pure revert as "Password
Saved" is removed as a title as well.

Bug:  chromium:810111 
Change-Id: I1582ac05e859b8a53d19490b4ab52f47c03d7fe1
Reviewed-on: https://chromium-review.googlesource.com/932916
Reviewed-by: Vasilii Sukhanov <vasilii@chromium.org>
Commit-Queue: Peter Boström <pbos@chromium.org>
Cr-Commit-Position: refs/heads/master@{#539190}
[modify] https://crrev.com/09af7df0a82d3612d2c6b8cd2e80ba65f64cbe6c/chrome/app/generated_resources.grd
[modify] https://crrev.com/09af7df0a82d3612d2c6b8cd2e80ba65f64cbe6c/chrome/browser/ui/passwords/manage_passwords_view_utils_unittest.cc

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/2472475178ae563942e23c6f59a94c529287c774

commit 2472475178ae563942e23c6f59a94c529287c774
Author: Peter Boström <pbos@chromium.org>
Date: Tue Feb 27 00:10:40 2018

Remove titlecasing for payments-dialog titles

Keeps section labels in conditional titlecase as they can be displayed
as the bubble heading and are properly titles within the dialog.

It also replaces 'Your payment' with 'Review your payment' to provide a
full sentence.

Bug:  chromium:810111 , chromium:812362
Change-Id: I4db492f772339e5a32fb92e1f3027d9aa047a67b
Reviewed-on: https://chromium-review.googlesource.com/935748
Reviewed-by: Mathieu Perreault <mathp@chromium.org>
Commit-Queue: Peter Boström <pbos@chromium.org>
Cr-Commit-Position: refs/heads/master@{#539318}
[modify] https://crrev.com/2472475178ae563942e23c6f59a94c529287c774/components/payments_strings.grdp