Able to reproduce the issue on 61.0.3143.0 on Linux Ubuntu 14.04, works fine on Windows-10 and Mac OS 10.12.5 using the same chrome version.

Stack trace:
============
Thread 33 (id: 24230) CRASHED [SIGSEGV @ 0x00000000 ] MAGIC SIGNATURE THREAD
Stack Quality83%Show frame trust levels
0x000055e6982f506e	(chrome -task_runner.cc:47 )	<name omitted>
0x000055e69936f848	(chrome -object_proxy.cc:165 )	dbus::ObjectProxy::CallMethodWithErrorCallback(dbus::MethodCall*, int, base::Callback<void (dbus::Response*), (base::internal::CopyMode)1, (base::internal::RepeatMode)1>, base::Callback<void (dbus::ErrorResponse*), (base::internal::CopyMode)1, (base::internal::RepeatMode)1>)
0x000055e69936f3e9	(chrome -object_proxy.cc:121 )	dbus::ObjectProxy::CallMethod(dbus::MethodCall*, int, base::Callback<void (dbus::Response*), (base::internal::CopyMode)1, (base::internal::RepeatMode)1>)
0x000055e699b4c1fa	(chrome -power_save_blocker_x11.cc:317 )	device::PowerSaveBlocker::Delegate::ApplyBlock()
0x000055e6982c250f	(chrome -callback.h:91 )	base::debug::TaskAnnotator::RunTask(char const*, base::PendingTask*)
0x000055e6982fc4f2	(chrome -task_tracker.cc:335 )	base::internal::TaskTracker::PerformRunTask(std::unique_ptr<base::internal::Task, std::default_delete<base::internal::Task> >, base::internal::Sequence*)
0x000055e6982fc9ef	(chrome -task_tracker_posix.cc:22 )	base::internal::TaskTrackerPosix::PerformRunTask(std::unique_ptr<base::internal::Task, std::default_delete<base::internal::Task> >, base::internal::Sequence*)
0x000055e6982fc15a	(chrome -task_tracker.cc:251 )	base::internal::TaskTracker::RunNextTask(base::internal::Sequence*)
0x000055e6982f87a7	(chrome -scheduler_worker.cc:80 )	base::internal::SchedulerWorker::Thread::ThreadMain()
0x000055e6983049f9	(chrome -platform_thread_posix.cc:71 )	base::(anonymous namespace)::ThreadFunc(void*)
0x00007f565d264183	(libpthread-2.19.so + 0x00008183 )	
0x00007f5656f77bec	(libc-2.19.so + 0x000fdbec )	

Other Scenarios: 
================
1) Go to www.youtube.com and observe
2) Go to webstore and add any app or extension and observe - Chrome crashes

Manual Bisect Info:
=====================
Good Build:61.0.3142.0
Bad Build: 61.0.3143.0

NOTE: Issue is not reproducible in windows

Deleted: crash.ogv 1.0 MB

	crash.ogv 1.0 MB View Download

Using the per-revision bisect providing the bisect results,

Good build: 61.0.3142.0 (Revision: 482491).
Bad build: 61.0.3143.0 (Revision: 482834).

You are probably looking for a change made after 482779 (known good), but no later than 482780 (first known bad).

CHANGE-LOG URL:
---------------
https://chromium.googlesource.com/chromium/src/+log/8584e4dc5242f4519c333ffd5ebbe671d68373f4..ca5e5da3f8e10f42b0262f41bd1c81211e9e0cee

From the CL above, assigning the issue to the concern owner

@rockot: Could you please look into the issue, pardon me if it has nothing to do with your changes and if possible please assign it to concern owner.

Reviewed-on: https://chromium-review.googlesource.com/550197

The change was reverted for other reasons.

See r482886