Repro Steps:
1. Start the IT2ME host on linux
2. Connect to it.

Expected:
It connects.

Actual:
It crashes.

Root cause:
Gtk seg fault on disconnect window.
Commenting out the disconnect window resolves the fix.

Gdb stack trace
Program received signal SIGSEGV, Segmentation fault.
0x0000000003363d14 in hb_segment_properties_equal (a=0xe83f8b48fb8948b3, b=0x7ffdbc41c760) at ../../third_party/harfbuzz-ng/src/hb-buffer.cc:64
64	  return a->direction == b->direction &&
(gdb) where
#0  0x0000000003363d14 in hb_segment_properties_equal (a=0xe83f8b48fb8948b3, b=0x7ffdbc41c760) at ../../third_party/harfbuzz-ng/src/hb-buffer.cc:64
#1  0x00000000033772fc in hb_shape_plan_matches (shape_plan=0xe83f8b48fb894853, proposal=0x7ffdbc41c760) at ../../third_party/harfbuzz-ng/src/hb-shape-plan.cc:373
#2  0x0000000003376fa6 in hb_shape_plan_create_cached (face=0x2264f91df320, props=0x2264f9650350, user_features=0x7ffdbc41c8d0, num_user_features=0, shaper_list=0x0)
    at ../../third_party/harfbuzz-ng/src/hb-shape-plan.cc:450
#3  0x0000000003377e16 in hb_shape_full (font=0x2264f8e66770, buffer=0x2264f96502e0, features=0x7ffdbc41c8d0, num_features=0, shaper_list=0x0) at ../../third_party/harfbuzz-ng/src/hb-shape.cc:376
#4  0x0000000003377e90 in hb_shape (font=0x2264f8e66770, buffer=0x2264f96502e0, features=0x7ffdbc41c8d0, num_features=0) at ../../third_party/harfbuzz-ng/src/hb-shape.cc:407
#5  0x00007f373e86310c in basic_engine_shape (engine=<optimized out>, font=0x2264f953e8b0, item_text=<optimized out>, item_length=<optimized out>, analysis=0x2264f97dab10, glyphs=0x2264f92be580, 
    paragraph_text=0x2264f94c6f70 "Stop Sharing", paragraph_length=12) at /build/buildd/pango1.0-1.36.3/./modules/basic/basic-fc.c:392
#6  0x00007f373def8d6b in pango_shape_full (item_text=0x2264f94c6f70 "Stop Sharing", item_length=12, paragraph_text=0x2264f94c6f70 "Stop Sharing", paragraph_length=12, 
    analysis=analysis@entry=0x2264f97dab10, glyphs=glyphs@entry=0x2264f92be580) at /build/buildd/pango1.0-1.36.3/./pango/shape.c:116
#7  0x00007f373dedc36c in shape_run (line=line@entry=0x2264f9538ad0, state=state@entry=0x7ffdbc41cc20, item=item@entry=0x2264f97dab00) at /build/buildd/pango1.0-1.36.3/./pango/pango-layout.c:3293
#8  0x00007f373dedc65d in process_item (layout=layout@entry=0x2264f97c7800, line=line@entry=0x2264f9538ad0, state=state@entry=0x7ffdbc41cc20, force_fit=force_fit@entry=1, 
    no_break_at_end=no_break_at_end@entry=0) at /build/buildd/pango1.0-1.36.3/./pango/pango-layout.c:3406
#9  0x00007f373deef5aa in process_line (state=0x7ffdbc41cc20, layout=0x2264f97c7800) at /build/buildd/pango1.0-1.36.3/./pango/pango-layout.c:3704
#10 pango_layout_check_lines (layout=<optimized out>) at /build/buildd/pango1.0-1.36.3/./pango/pango-layout.c:4027
#11 0x00007f373def1028 in pango_layout_get_extents_internal (layout=0x2264f97c7800, ink_rect=ink_rect@entry=0x0, logical_rect=logical_rect@entry=0x7ffdbc41cd80, line_extents=line_extents@entry=0x0)
    at /build/buildd/pango1.0-1.36.3/./pango/pango-layout.c:2587
#12 0x00007f373def13cc in pango_layout_get_extents (layout=<optimized out>, ink_rect=ink_rect@entry=0x0, logical_rect=logical_rect@entry=0x7ffdbc41cd80)
    at /build/buildd/pango1.0-1.36.3/./pango/pango-layout.c:2782
#13 0x00007f373f3d41f9 in gtk_label_size_request (widget=0x2264f9022910, requisition=0x2264f9022948) at /build/gtk+2.0-KsZSEA/gtk+2.0-2.24.23/gtk/gtklabel.c:3179
#14 0x00007f373fe0b210 in g_cclosure_marshal_VOID__BOXEDv (closure=0x2264f8fa4040, return_value=<optimized out>, instance=<optimized out>, args=<optimized out>, marshal_data=<optimized out>, 
    n_params=<optimized out>, param_types=0x2264f90eb9a0) at /build/buildd/glib2.0-2.40.2/./gobject/gmarshal.c:1160
#15 0x00007f373fe0855f in _g_closure_invoke_va (closure=0x2264f8fa4040, return_value=0x0, instance=0x2264f9022910, args=0x7ffdbc41d050, n_params=1, param_types=0x2264f90eb9a0)
    at /build/buildd/glib2.0-2.40.2/./gobject/gclosure.c:831
#16 0x00007f373fe21088 in g_signal_emit_valist (instance=instance@entry=0x2264f9022910, signal_id=signal_id@entry=18, detail=detail@entry=0, var_args=var_args@entry=0x7ffdbc41d050)
    at /build/buildd/glib2.0-2.40.2/./gobject/gsignal.c:3215
#17 0x00007f373fe22212 in g_signal_emit_by_name (instance=instance@entry=0x2264f9022910, detailed_signal=detailed_signal@entry=0x7f373f5fa399 "size-request")
    at /build/buildd/glib2.0-2.40.2/./gobject/gsignal.c:3403
#18 0x00007f373f447a25 in do_size_request (widget=widget@entry=0x2264f9022910) at /build/gtk+2.0-KsZSEA/gtk+2.0-2.24.23/gtk/gtksizegroup.c:628
#19 0x00007f373f448408 in do_size_request (widget=0x2264f9022910) at /build/gtk+2.0-KsZSEA/gtk+2.0-2.24.23/gtk/gtksizegroup.c:831
#20 _gtk_size_group_compute_requisition (widget=0x2264f9022910, requisition=requisition@entry=0x7ffdbc41d1c0) at /build/gtk+2.0-KsZSEA/gtk+2.0-2.24.23/gtk/gtksizegroup.c:828
#21 0x00007f373f4ecd49 in IA__gtk_widget_size_request (widget=<optimized out>, requisition=requisition@entry=0x7ffdbc41d1c0) at /build/gtk+2.0-KsZSEA/gtk+2.0-2.24.23/gtk/gtkwidget.c:3932
#22 0x00007f373f33b8ce in gtk_button_size_request (widget=0x2264f9418850, requisition=0x2264f9418888) at /build/gtk+2.0-KsZSEA/gtk+2.0-2.24.23/gtk/gtkbutton.c:1355
#23 0x00007f373fe0b210 in g_cclosure_marshal_VOID__BOXEDv (closure=0x2264f8fa4040, return_value=<optimized out>, instance=<optimized out>, args=<optimized out>, marshal_data=<optimized out>, 
    n_params=<optimized out>, param_types=0x2264f90eb9a0) at /build/buildd/glib2.0-2.40.2/./gobject/gmarshal.c:1160
#24 0x00007f373fe0855f in _g_closure_invoke_va (closure=0x2264f8fa4040, return_value=0x0, instance=0x2264f9418850, args=0x7ffdbc41d490, n_params=1, param_types=0x2264f90eb9a0)
    at /build/buildd/glib2.0-2.40.2/./gobject/gclosure.c:831
#25 0x00007f373fe21088 in g_signal_emit_valist (instance=instance@entry=0x2264f9418850, signal_id=signal_id@entry=18, detail=detail@entry=0, var_args=var_args@entry=0x7ffdbc41d490)
    at /build/buildd/glib2.0-2.40.2/./gobject/gsignal.c:3215
#26 0x00007f373fe22212 in g_signal_emit_by_name (instance=instance@entry=0x2264f9418850, detailed_signal=detailed_signal@entry=0x7f373f5fa399 "size-request")
    at /build/buildd/glib2.0-2.40.2/./gobject/gsignal.c:3403
#27 0x00007f373f447a25 in do_size_request (widget=widget@entry=0x2264f9418850) at /build/gtk+2.0-KsZSEA/gtk+2.0-2.24.23/gtk/gtksizegroup.c:628
#28 0x00007f373f448408 in do_size_request (widget=0x2264f9418850) at /build/gtk+2.0-KsZSEA/gtk+2.0-2.24.23/gtk/gtksizegroup.c:831
#29 _gtk_size_group_compute_requisition (widget=0x2264f9418850, requisition=requisition@entry=0x7ffdbc41d600) at /build/gtk+2.0-KsZSEA/gtk+2.0-2.24.23/gtk/gtksizegroup.c:828
#30 0x00007f373f4ecd49 in IA__gtk_widget_size_request (widget=<optimized out>, requisition=requisition@entry=0x7ffdbc41d600) at /build/gtk+2.0-KsZSEA/gtk+2.0-2.24.23/gtk/gtkwidget.c:3932
#31 0x00007f373f33467d in gtk_box_size_request (widget=0x2264f8f4d910, requisition=0x2264f8f4d948) at /build/gtk+2.0-KsZSEA/gtk+2.0-2.24.23/gtk/gtkbox.c:280
#32 0x00007f373fe0b210 in g_cclosure_marshal_VOID__BOXEDv (closure=0x2264f8fa4040, return_value=<optimized out>, instance=<optimized out>, args=<optimized out>, marshal_data=<optimized out>, 
    n_params=<optimized out>, param_types=0x2264f90eb9a0) at /build/buildd/glib2.0-2.40.2/./gobject/gmarshal.c:1160
#33 0x00007f373fe0855f in _g_closure_invoke_va (closure=0x2264f8fa4040, return_value=0x0, instance=0x2264f8f4d910, args=0x7ffdbc41d8d0, n_params=1, param_types=0x2264f90eb9a0)
    at /build/buildd/glib2.0-2.40.2/./gobject/gclosure.c:831
#34 0x00007f373fe21088 in g_signal_emit_valist (instance=instance@entry=0x2264f8f4d910, signal_id=signal_id@entry=18, detail=detail@entry=0, var_args=var_args@entry=0x7ffdbc41d8d0)
    at /build/buildd/glib2.0-2.40.2/./gobject/gsignal.c:3215
#35 0x00007f373fe22212 in g_signal_emit_by_name (instance=instance@entry=0x2264f8f4d910, detailed_signal=detailed_signal@entry=0x7f373f5fa399 "size-request")
    at /build/buildd/glib2.0-2.40.2/./gobject/gsignal.c:3403
#36 0x00007f373f447a25 in do_size_request (widget=widget@entry=0x2264f8f4d910) at /build/gtk+2.0-KsZSEA/gtk+2.0-2.24.23/gtk/gtksizegroup.c:628
#37 0x00007f373f448408 in do_size_request (widget=0x2264f8f4d910) at /build/gtk+2.0-KsZSEA/gtk+2.0-2.24.23/gtk/gtksizegroup.c:831
#38 _gtk_size_group_compute_requisition (widget=0x2264f8f4d910, requisition=requisition@entry=0x7ffdbc41da30) at /build/gtk+2.0-KsZSEA/gtk+2.0-2.24.23/gtk/gtksizegroup.c:828
#39 0x00007f373f4ecd49 in IA__gtk_widget_size_request (widget=<optimized out>, requisition=requisition@entry=0x7ffdbc41da30) at /build/gtk+2.0-KsZSEA/gtk+2.0-2.24.23/gtk/gtkwidget.c:3932
#40 0x00007f373f32a95c in gtk_alignment_size_request (widget=0x2264f9265e80, requisition=0x2264f9265eb8) at /build/gtk+2.0-KsZSEA/gtk+2.0-2.24.23/gtk/gtkalignment.c:482
#41 0x00007f373fe0b210 in g_cclosure_marshal_VOID__BOXEDv (closure=0x2264f8fa4040, return_value=<optimized out>, instance=<optimized out>, args=<optimized out>, marshal_data=<optimized out>, 
    n_params=<optimized out>, param_types=0x2264f90eb9a0) at /build/buildd/glib2.0-2.40.2/./gobject/gmarshal.c:1160
---Type <return> to continue, or q <return> to quit---
#42 0x00007f373fe0855f in _g_closure_invoke_va (closure=0x2264f8fa4040, return_value=0x0, instance=0x2264f9265e80, args=0x7ffdbc41dce0, n_params=1, param_types=0x2264f90eb9a0)
    at /build/buildd/glib2.0-2.40.2/./gobject/gclosure.c:831
#43 0x00007f373fe21088 in g_signal_emit_valist (instance=instance@entry=0x2264f9265e80, signal_id=signal_id@entry=18, detail=detail@entry=0, var_args=var_args@entry=0x7ffdbc41dce0)
    at /build/buildd/glib2.0-2.40.2/./gobject/gsignal.c:3215
#44 0x00007f373fe22212 in g_signal_emit_by_name (instance=instance@entry=0x2264f9265e80, detailed_signal=detailed_signal@entry=0x7f373f5fa399 "size-request")
    at /build/buildd/glib2.0-2.40.2/./gobject/gsignal.c:3403
#45 0x00007f373f447a25 in do_size_request (widget=widget@entry=0x2264f9265e80) at /build/gtk+2.0-KsZSEA/gtk+2.0-2.24.23/gtk/gtksizegroup.c:628
#46 0x00007f373f448408 in do_size_request (widget=0x2264f9265e80) at /build/gtk+2.0-KsZSEA/gtk+2.0-2.24.23/gtk/gtksizegroup.c:831
#47 _gtk_size_group_compute_requisition (widget=0x2264f9265e80, requisition=requisition@entry=0x7ffdbc41de40) at /build/gtk+2.0-KsZSEA/gtk+2.0-2.24.23/gtk/gtksizegroup.c:828
#48 0x00007f373f4ecd49 in IA__gtk_widget_size_request (widget=<optimized out>, requisition=requisition@entry=0x7ffdbc41de40) at /build/gtk+2.0-KsZSEA/gtk+2.0-2.24.23/gtk/gtkwidget.c:3932
#49 0x00007f373f4fbd6c in gtk_window_size_request (widget=0x2264f94b3050, requisition=0x2264f94b3088) at /build/gtk+2.0-KsZSEA/gtk+2.0-2.24.23/gtk/gtkwindow.c:4968
#50 0x00007f373fe0b210 in g_cclosure_marshal_VOID__BOXEDv (closure=0x2264f8fa4040, return_value=<optimized out>, instance=<optimized out>, args=<optimized out>, marshal_data=<optimized out>, 
    n_params=<optimized out>, param_types=0x2264f90eb9a0) at /build/buildd/glib2.0-2.40.2/./gobject/gmarshal.c:1160
#51 0x00007f373fe085e7 in _g_closure_invoke_va (closure=0x2264f8fa4040, return_value=0x0, instance=0x2264f94b3050, args=0x7ffdbc41e0f0, n_params=1, param_types=0x2264f90eb9a0)
    at /build/buildd/glib2.0-2.40.2/./gobject/gclosure.c:831
#52 0x00007f373fe21088 in g_signal_emit_valist (instance=instance@entry=0x2264f94b3050, signal_id=signal_id@entry=18, detail=detail@entry=0, var_args=var_args@entry=0x7ffdbc41e0f0)
    at /build/buildd/glib2.0-2.40.2/./gobject/gsignal.c:3215
#53 0x00007f373fe22212 in g_signal_emit_by_name (instance=instance@entry=0x2264f94b3050, detailed_signal=detailed_signal@entry=0x7f373f5fa399 "size-request")
    at /build/buildd/glib2.0-2.40.2/./gobject/gsignal.c:3403
#54 0x00007f373f447a25 in do_size_request (widget=widget@entry=0x2264f94b3050) at /build/gtk+2.0-KsZSEA/gtk+2.0-2.24.23/gtk/gtksizegroup.c:628
#55 0x00007f373f448408 in do_size_request (widget=0x2264f94b3050) at /build/gtk+2.0-KsZSEA/gtk+2.0-2.24.23/gtk/gtksizegroup.c:831
#56 _gtk_size_group_compute_requisition (widget=widget@entry=0x2264f94b3050, requisition=requisition@entry=0x0) at /build/gtk+2.0-KsZSEA/gtk+2.0-2.24.23/gtk/gtksizegroup.c:828
#57 0x00007f373f4ecd49 in IA__gtk_widget_size_request (widget=widget@entry=0x2264f94b3050, requisition=requisition@entry=0x0) at /build/gtk+2.0-KsZSEA/gtk+2.0-2.24.23/gtk/gtkwidget.c:3932
#58 0x00007f373f4fc63b in gtk_window_compute_configure_request (window=window@entry=0x2264f94b3050, request=request@entry=0x7ffdbc41e340, geometry=geometry@entry=0x7ffdbc41e350, 
    flags=flags@entry=0x7ffdbc41e32c) at /build/gtk+2.0-KsZSEA/gtk+2.0-2.24.23/gtk/gtkwindow.c:5842
#59 0x00007f373f4fedf7 in gtk_window_show (widget=0x2264f94b3050) at /build/gtk+2.0-KsZSEA/gtk+2.0-2.24.23/gtk/gtkwindow.c:4509
#60 0x00007f373fe083b8 in g_closure_invoke (closure=0x2264f8fa4cc0, return_value=0x0, n_param_values=1, param_values=0x7ffdbc41e540, invocation_hint=0x7ffdbc41e4e0)
    at /build/buildd/glib2.0-2.40.2/./gobject/gclosure.c:768
#61 0x00007f373fe19557 in signal_emit_unlocked_R (node=node@entry=0x2264f8f34840, detail=detail@entry=0, instance=instance@entry=0x2264f94b3050, emission_return=emission_return@entry=0x0, 
    instance_and_params=instance_and_params@entry=0x7ffdbc41e540) at /build/buildd/glib2.0-2.40.2/./gobject/gsignal.c:3481
#62 0x00007f373fe21a29 in g_signal_emit_valist (instance=<optimized out>, signal_id=<optimized out>, detail=<optimized out>, var_args=var_args@entry=0x7ffdbc41e6c8)
    at /build/buildd/glib2.0-2.40.2/./gobject/gsignal.c:3307
#63 0x00007f373fe21ce2 in g_signal_emit (instance=instance@entry=0x2264f94b3050, signal_id=<optimized out>, detail=detail@entry=0) at /build/buildd/glib2.0-2.40.2/./gobject/gsignal.c:3363
#64 0x00007f373f4f3dc6 in IA__gtk_widget_show (widget=0x2264f94b3050) at /build/gtk+2.0-KsZSEA/gtk+2.0-2.24.23/gtk/gtkwidget.c:3236
#65 0x0000000002cbe5db in remoting::(anonymous namespace)::DisconnectWindowGtk::Start (this=0x2264f90df9c0, client_session_control=...) at ../../remoting/host/disconnect_window_linux.cc:161
#66 0x0000000002cc13f8 in remoting::HostWindowProxy::Core::StartOnUiThread (this=0x2264f95debf0, client_jid="kelvinp@google.com/chromoting3E8ACA23") at ../../remoting/host/host_window_proxy.cc:133
#67 0x0000000000e3a5f6 in base::internal::RunnableAdapter<void (net::PollingProxyConfigService::Core::*)(net::ProxyConfig const&)>::Run<scoped_refptr<net::PollingProxyConfigService::Core> const&, net::ProxyConfig const&> (this=0x7ffdbc41f350, receiver_ptr=..., args=...) at ../../base/bind_internal.h:186
#68 0x0000000002cc251e in base::internal::InvokeHelper<false, void, base::internal::RunnableAdapter<void (remoting::HostWindowProxy::Core::*)(std::string const&)> >::MakeItSo<scoped_refptr<remoting::HostWindowProxy::Core> const&, std::string const&> (runnable=..., args="kelvinp@google.com/chromoting3E8ACA23", args="kelvinp@google.com/chromoting3E8ACA23") at ../../base/bind_internal.h:311
#69 0x0000000002cc24cd in base::internal::Invoker<base::IndexSequence<0ul, 1ul>, base::internal::BindState<base::internal::RunnableAdapter<void (remoting::HostWindowProxy::Core::*)(std::string const&)>, void (remoting::HostWindowProxy::Core*, std::string const&), remoting::HostWindowProxy::Core*, std::string const&>, base::internal::InvokeHelper<false, void, base::internal::RunnableAdapter<void (remoting::HostWindowProxy::Core::*)(std::string const&)> >, void ()>::Run(base::internal::BindStateBase*) (base=0x2264f97784f0) at ../../base/bind_internal.h:362
#70 0x00000000004dc22e in base::Callback<void (), (base::internal::CopyMode)1>::Run() const (this=0x7ffdbc41f848) at ../../base/callback.h:397
#71 0x0000000002e81e7e in base::debug::TaskAnnotator::RunTask (this=0x7ffdbc41fed0, queue_function=0x370a085 "MessageLoop::PostTask", pending_task=...) at ../../base/debug/task_annotator.cc:51
#72 0x0000000002d3217c in base::MessageLoop::RunTask (this=0x7ffdbc41fc98, pending_task=...) at ../../base/message_loop/message_loop.cc:484
#73 0x0000000002d32418 in base::MessageLoop::DeferOrRunPendingTask (this=0x7ffdbc41fc98, pending_task=...) at ../../base/message_loop/message_loop.cc:493
#74 0x0000000002d32672 in base::MessageLoop::DoWork (this=0x7ffdbc41fc98) at ../../base/message_loop/message_loop.cc:610
#75 0x0000000002d495f6 in base::MessagePumpGlib::Run (this=0x2264f91d4bd0, delegate=0x7ffdbc41fc98) at ../../base/message_loop/message_pump_glib.cc:313
#76 0x0000000002d31b6f in base::MessageLoop::RunHandler (this=0x7ffdbc41fc98) at ../../base/message_loop/message_loop.cc:448
#77 0x0000000002da43b4 in base::RunLoop::Run (this=0x7ffdbc41fc18) at ../../base/run_loop.cc:35
#78 0x00000000004cff31 in remoting::StartIt2MeNativeMessagingHost () at ../../remoting/host/it2me/it2me_native_messaging_host_main.cc:140
#79 0x00000000004d001d in remoting::It2MeNativeMessagingHostMain (argc=2, argv=0x7ffdbc420128) at ../../remoting/host/it2me/it2me_native_messaging_host_main.cc:152
#80 0x00000000004cfac2 in main (argc=2, argv=0x7ffdbc420128) at ../../remoting/host/it2me/it2me_native_messaging_host_entry_point.cc:8
(gdb)