I could not re-produce on
Wi10 61.0.3114.0 (Official Build) canary (64-bit) (cohort: 64-Bit)
for both chrome://flags/#enable-idle-time-spell-checking Enabled/Disabled

Screenshot in #c1 seems to be MacOS.

Yes, confirm not seeing on Windows canary.  MacOS only for now.

Bisecting on MacOSX, suggests patch https://codereview.chromium.org/2848943002 on  bug 715365  caused this issue.

I reverted that change locally on MacOSX form my ToT Chromium build, and the spellcheck markers appear per n normal.

Per #c5, rlanday@, could you take look?

FYI: "Ask Google for suggestions", AGfS works as expected on Windows.
See reproeduce steps in the  issue 633641 .

AGfS also returns the result async as MacOS spell checker.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/e6a7d7e3cd5665b6bc9b0e8cac4c813c52f90b02

commit e6a7d7e3cd5665b6bc9b0e8cac4c813c52f90b02
Author: noel <noel@chromium.org>
Date: Mon May 29 05:54:15 2017

Revert of Allow storing multiple replacements on SpellCheckResult (patchset #11 id:200001 of https://codereview.chromium.org/2848943002/ )

Reason for revert:
Caused spell markers to no longer appear on OSX, per  crbug.com/727172 

Original issue's description:
> Allow storing multiple replacements on SpellCheckResult
>
> I'm working on adding support for the Android spellcheck suggestion list that
> appears in a native text box when you tap on a misspelled word. It appears that
> I need to modify this piece of infrastructure to support passing multiple
> suggestions through to the Spelling marker that gets added.
>
> For reference, we construct the SpellCheckResult objects from the Android
> spellchecker results in SpellCheckerSessionBridge::ProcessSpellCheckResults().
>
> Alternatively, ContextMenuClientImpl has logic for calling the spellchecker
> again to get the list of suggestions that we might be able to use:
> https://chromium.googlesource.com/chromium/src/+/adc8910776c64a876f0422454da618a37d01167b/third_party/WebKit/Source/web/ContextMenuClientImpl.cpp#346
>
> However, I talked to aelias and he said it would be better to store the
> suggestions the first time we call the spellchecker, at the time we add the
> marker, to avoid going back and forth unnecessarily.
>
> BUG= 715365 
>
> Review-Url: https://codereview.chromium.org/2848943002
> Cr-Commit-Position: refs/heads/master@{#475058}
> Committed: https://chromium.googlesource.com/chromium/src/+/c45f50742410a644a054325478d885e61d286713

TBR=jochen@chromium.org,aelias@chromium.org,groby@chromium.org,mkwst@chromium.org,xiaochengh@chromium.org,rlanday@chromium.org
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG= 715365 ,  727172 

Review-Url: https://codereview.chromium.org/2906243002
Cr-Commit-Position: refs/heads/master@{#475293}

[modify] https://crrev.com/e6a7d7e3cd5665b6bc9b0e8cac4c813c52f90b02/chrome/browser/renderer_context_menu/spelling_menu_observer.cc
[modify] https://crrev.com/e6a7d7e3cd5665b6bc9b0e8cac4c813c52f90b02/chrome/browser/spellchecker/spellcheck_message_filter_platform_mac_unittest.cc
[modify] https://crrev.com/e6a7d7e3cd5665b6bc9b0e8cac4c813c52f90b02/chrome/browser/spellchecker/spellcheck_message_filter_unittest.cc
[modify] https://crrev.com/e6a7d7e3cd5665b6bc9b0e8cac4c813c52f90b02/chrome/browser/spellchecker/spelling_service_client_unittest.cc
[modify] https://crrev.com/e6a7d7e3cd5665b6bc9b0e8cac4c813c52f90b02/components/spellcheck/common/BUILD.gn
[modify] https://crrev.com/e6a7d7e3cd5665b6bc9b0e8cac4c813c52f90b02/components/spellcheck/common/spellcheck_messages.h
[delete] https://crrev.com/64b85971b8b58c052b7e8b53754d5558b8e1dc53/components/spellcheck/common/spellcheck_result.cc
[modify] https://crrev.com/e6a7d7e3cd5665b6bc9b0e8cac4c813c52f90b02/components/spellcheck/common/spellcheck_result.h
[modify] https://crrev.com/e6a7d7e3cd5665b6bc9b0e8cac4c813c52f90b02/components/spellcheck/renderer/spellcheck.cc
[modify] https://crrev.com/e6a7d7e3cd5665b6bc9b0e8cac4c813c52f90b02/components/spellcheck/renderer/spellcheck_provider_test.cc
[modify] https://crrev.com/e6a7d7e3cd5665b6bc9b0e8cac4c813c52f90b02/components/spellcheck/renderer/spellcheck_provider_unittest.cc
[modify] https://crrev.com/e6a7d7e3cd5665b6bc9b0e8cac4c813c52f90b02/components/spellcheck/renderer/spellcheck_unittest.cc
[modify] https://crrev.com/e6a7d7e3cd5665b6bc9b0e8cac4c813c52f90b02/content/shell/test_runner/mock_spell_check.cc
[modify] https://crrev.com/e6a7d7e3cd5665b6bc9b0e8cac4c813c52f90b02/content/shell/test_runner/spell_check_client.cc
[modify] https://crrev.com/e6a7d7e3cd5665b6bc9b0e8cac4c813c52f90b02/third_party/WebKit/Source/core/editing/spellcheck/SpellCheckRequester.h
[modify] https://crrev.com/e6a7d7e3cd5665b6bc9b0e8cac4c813c52f90b02/third_party/WebKit/Source/core/editing/spellcheck/SpellChecker.cpp
[modify] https://crrev.com/e6a7d7e3cd5665b6bc9b0e8cac4c813c52f90b02/third_party/WebKit/Source/core/editing/spellcheck/SpellCheckerTest.cpp
[modify] https://crrev.com/e6a7d7e3cd5665b6bc9b0e8cac4c813c52f90b02/third_party/WebKit/Source/platform/text/TextChecking.h
[modify] https://crrev.com/e6a7d7e3cd5665b6bc9b0e8cac4c813c52f90b02/third_party/WebKit/Source/web/WebTextCheckingResult.cpp
[modify] https://crrev.com/e6a7d7e3cd5665b6bc9b0e8cac4c813c52f90b02/third_party/WebKit/Source/web/tests/WebFrameTest.cpp
[modify] https://crrev.com/e6a7d7e3cd5665b6bc9b0e8cac4c813c52f90b02/third_party/WebKit/public/web/WebTextCheckingResult.h

After #9, built ToT Chromium Mac OSX and the bug is gone (I see spell check markers again in web forms, web contentEditable, etc).

Follow-up bug to add a browser test for macOS spellcheck:
crbug.com/728659

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/455b156778ed1f2df63f8a14dff99399c88e475c

commit 455b156778ed1f2df63f8a14dff99399c88e475c
Author: rlanday <rlanday@chromium.org>
Date: Fri Jun 02 14:48:11 2017

[Reland] Allow storing multiple replacements on SpellCheckResult

This CL was reverted because it did not properly handle the case where a
misspelling result is created with no suggested replacements. We want to
preserve misspelling results that don't include any suggested replacements, but
remove those that have some suggested replacements but they're all just changing
between different types of apostrophes.

Original CL:
https://codereview.chromium.org/2848943002

Revert:
https://codereview.chromium.org/2906243002

Original description:

Allow storing multiple replacements on SpellCheckResult

I'm working on adding support for the Android spellcheck suggestion list that
appears in a native text box when you tap on a misspelled word. It appears that
I need to modify this piece of infrastructure to support passing multiple
suggestions through to the Spelling marker that gets added.

For reference, we construct the SpellCheckResult objects from the Android
spellchecker results in SpellCheckerSessionBridge::ProcessSpellCheckResults().

Alternatively, ContextMenuClientImpl has logic for calling the spellchecker
again to get the list of suggestions that we might be able to use:
https://chromium.googlesource.com/chromium/src/+/adc8910776c64a876f0422454da618a37d01167b/third_party/WebKit/Source/web/ContextMenuClientImpl.cpp#346

However, I talked to aelias and he said it would be better to store the
suggestions the first time we call the spellchecker, at the time we add the
marker, to avoid going back and forth unnecessarily.

BUG= 715365 , 727172 

Review-Url: https://codereview.chromium.org/2911253003
Cr-Commit-Position: refs/heads/master@{#476644}

[modify] https://crrev.com/455b156778ed1f2df63f8a14dff99399c88e475c/chrome/browser/renderer_context_menu/spelling_menu_observer.cc
[modify] https://crrev.com/455b156778ed1f2df63f8a14dff99399c88e475c/chrome/browser/spellchecker/spell_check_host_impl_unittest.cc
[modify] https://crrev.com/455b156778ed1f2df63f8a14dff99399c88e475c/chrome/browser/spellchecker/spellcheck_message_filter_platform_mac_unittest.cc
[modify] https://crrev.com/455b156778ed1f2df63f8a14dff99399c88e475c/chrome/browser/spellchecker/spelling_service_client_unittest.cc
[modify] https://crrev.com/455b156778ed1f2df63f8a14dff99399c88e475c/components/spellcheck/common/BUILD.gn
[modify] https://crrev.com/455b156778ed1f2df63f8a14dff99399c88e475c/components/spellcheck/common/spellcheck_messages.h
[add] https://crrev.com/455b156778ed1f2df63f8a14dff99399c88e475c/components/spellcheck/common/spellcheck_result.cc
[modify] https://crrev.com/455b156778ed1f2df63f8a14dff99399c88e475c/components/spellcheck/common/spellcheck_result.h
[modify] https://crrev.com/455b156778ed1f2df63f8a14dff99399c88e475c/components/spellcheck/renderer/spellcheck.cc
[modify] https://crrev.com/455b156778ed1f2df63f8a14dff99399c88e475c/components/spellcheck/renderer/spellcheck_provider_test.cc
[modify] https://crrev.com/455b156778ed1f2df63f8a14dff99399c88e475c/components/spellcheck/renderer/spellcheck_provider_unittest.cc
[modify] https://crrev.com/455b156778ed1f2df63f8a14dff99399c88e475c/components/spellcheck/renderer/spellcheck_unittest.cc
[modify] https://crrev.com/455b156778ed1f2df63f8a14dff99399c88e475c/content/shell/test_runner/mock_spell_check.cc
[modify] https://crrev.com/455b156778ed1f2df63f8a14dff99399c88e475c/content/shell/test_runner/spell_check_client.cc
[modify] https://crrev.com/455b156778ed1f2df63f8a14dff99399c88e475c/third_party/WebKit/Source/core/editing/spellcheck/SpellCheckRequester.h
[modify] https://crrev.com/455b156778ed1f2df63f8a14dff99399c88e475c/third_party/WebKit/Source/core/editing/spellcheck/SpellChecker.cpp
[modify] https://crrev.com/455b156778ed1f2df63f8a14dff99399c88e475c/third_party/WebKit/Source/core/editing/spellcheck/SpellCheckerTest.cpp
[modify] https://crrev.com/455b156778ed1f2df63f8a14dff99399c88e475c/third_party/WebKit/Source/core/exported/WebTextCheckingResult.cpp
[modify] https://crrev.com/455b156778ed1f2df63f8a14dff99399c88e475c/third_party/WebKit/Source/platform/text/TextChecking.h
[modify] https://crrev.com/455b156778ed1f2df63f8a14dff99399c88e475c/third_party/WebKit/Source/web/tests/WebFrameTest.cpp
[modify] https://crrev.com/455b156778ed1f2df63f8a14dff99399c88e475c/third_party/WebKit/public/web/WebTextCheckingResult.h

Verified fixed, Mac looks good to me.