Based on code search on 'focus_manager.cc', could be related to https://codereview.chromium.org/2691183002.

oshima@: Could you please take a look at this.

Thank you!

That stack must be from different crash. I've got this

#0 0x7ff6343b38d7 base::debug::StackTrace::StackTrace()
#1 0x7ff6343b344f base::debug::(anonymous namespace)::StackDumpSignalHandler()
#2 0x7ff63452e330 <unknown>
#3 0x7ff629ec4c37 gsignal
#4 0x7ff629ec8028 abort
#5 0x7ff6343b17c2 base::debug::BreakDebugger()
#6 0x7ff6343d57ac logging::LogMessage::~LogMessage()
#7 0x7ff63560dad7 chromeos::PrintersManagerFactory::BuildServiceInstanceFor()
#8 0x7ff62fa232f0 BrowserContextKeyedServiceFactory::BuildServiceInstanceFor()
#9 0x7ff63055ffd1 KeyedServiceFactory::GetServiceForContext()
#10 0x7ff636e3b1ce printing::PrinterBackendProxy::Create()
#11 0x7ff636e3636b PrintPreviewHandler::printer_backend_proxy()
#12 0x7ff636e35a3e PrintPreviewHandler::HandleGetInitialSettings()
#13 0x7ff63205b89c content::WebUIImpl::ProcessWebUIMessage()
#14 0x7ff63205a8e3 _ZN3IPC8MessageTI26ViewHostMsg_WebUISend_MetaSt5tupleIJ4GURLSsN4base9ListValueEEEvE8DispatchIN7content9WebUIImplESA_vMSA_FvRKS3_RKSsRKS5_EEEbPKNS_7MessageEPT_PT0_PT1_T2_
#15 0x7ff63205a7d3 content::WebUIImpl::OnMessageReceived()
#16 0x7ff63202e60f content::WebContentsImpl::OnMessageReceived()
#17 0x7ff631f2978a content::RenderViewHostImpl::OnMessageReceived()
#18 0x7ff631f2e622 content::RenderWidgetHostImpl::OnMessageReceived()
#19 0x7ff631f1d0fa content::RenderProcessHostImpl::OnMessageReceived()
#20 0x7ff6347f8725 IPC::ChannelProxy::Context::OnDispatchMessage()

It's crashing because sync_service is null for guest profile.

I have a patch for this and should have it out today.

Chrome Sync team might have a better solution.  Will update soon.

do we know what might have regressed this? When I search for BuildServiceInstanceFor, there seem to be several new crashes with that in the stack (for various keyed services). See for example issue 696993

When PrintersManager gets created, it makes a call to a ProfileSyncService which is null.  The actual line, for this particular crash, is here: https://cs.chromium.org/chromium/src/chrome/browser/chromeos/printing/printers_manager_factory.cc?rcl=c1517f207db34e85c4c1744aa7c06b0b6eb24fee&l=66

This occurs for Guest mode because Guest mode is run with the --disable-sync flag which causes the above problem.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/233dc1e93732142695fe2407f1ed882454cd1eab

commit 233dc1e93732142695fe2407f1ed882454cd1eab
Author: skau <skau@chromium.org>
Date: Thu Mar 02 21:47:17 2017

Use an in memory store until  crbug.com/688533  is fixed.

In ChromeOS Guest Mode, Chrome runs with --disable-sync which causes
ProfileSyncService to always be null.  Thus, we are unable to create a
ModelTypeStore.  Until this can be fixed, use the in-memory store that's
normally used for testing.

BUG= 694992 

Review-Url: https://codereview.chromium.org/2716973002
Cr-Commit-Position: refs/heads/master@{#454387}

[modify] https://crrev.com/233dc1e93732142695fe2407f1ed882454cd1eab/chrome/browser/chromeos/printing/printers_manager_factory.cc

This is now mitigated.  A proper fix will land in M59.

[Auto-generated comment by a script] We noticed that this issue is targeted for M-58; it appears the fix may have landed after branch point, meaning a merge might be required. Please confirm if a merge is required here - if so add Merge-Request-58 label, otherwise remove Merge-TBD label. Thanks.

Commit was present at branch point and does not require merge.

Verified on 9334.2.0/58.0.3029.6 

Before the branch open the print view it would crash immediately but not now it does still crash but after ~50 seconds so re-opening 

Test build - 9334.2.0/58.0.3029.6 

Any chance you have a crash log?  I'm trying to repro on a celes.

It seems to be fine on 9347.0.0/59.0.3033 and we haven't patched anything recently.  Is it possible the crash was due to a different issue?

In guest mode does not collect the crash ids. Attaching the debug logs

It not specific to print view.Open any browser let to stand for 50sec it crashes
only in guest mode

Deleted: debug-logs_20170307-142520.tgz 2.5 MB

debug-logs_20170307-142520.tgz 2.5 MB Download

This could be because the chrome crash 
https://bugs.chromium.org/p/chromium/issues/detail?id=698057

Will verify again once the above mentioned bug fix is in.

The fix for the crash mentioned in comment 18 is in, so can we check if this is still happening?

 9334.9.0/58.0.3029.18 

[Auto-generated comment by a script] We noticed that this issue is targeted for M-58; it appears the fix may have landed after branch point, meaning a merge might be required. Please confirm if a merge is required here - if so add Merge-Request-58 label, otherwise remove Merge-TBD label. Thanks.