Uncaught Error: Cannot call function 'setTouchBar' on missing remote object 117Error: Cannot cal...

[Enter steps to reproduce:]
Sorry - no idea what I did to induce this traceback
1. ...
2. ...

**Atom**: 1.26.0 x64
**Electron**: 1.7.11
**OS**: Mac OS X 10.13.5
**Thrown From**: [tool-bar](https://github.com/suda/toolbar) package 1.1.7

### Stack Trace

Uncaught Error: Cannot call function 'setTouchBar' on missing remote object 117
Error: Cannot call function 'setTouchBar' on missing remote object 117
at throwRPCError (/Applications/Atom.app/Contents/Resources/electron.asar/browser/rpc-server.js:143:17)
at EventEmitter. (/Applications/Atom.app/Contents/Resources/electron.asar/browser/rpc-server.js:354:7)
at emitMany (events.js:127:13)
at EventEmitter.emit (events.js:204:7)
at WebContents. (/Applications/Atom.app/Contents/Resources/electron.asar/browser/api/web-contents.js:256:13)
at emitTwo (events.js:106:13)
at WebContents.emit (events.js:194:7)

```
At /Applications/Atom.app/Contents/Resources/electron.asar/renderer/api/remote.js:234

Error: Cannot call function 'setTouchBar' on missing remote object 117
Error: Cannot call function 'setTouchBar' on missing remote object 117
at throwRPCError (/Applications/Atom.app/Contents/Resources/electron.asar/browser/rpc-server.js:143:17)
at EventEmitter. (/Applications/Atom.app/Contents/Resources/electron.asar/browser/rpc-server.js:354:7)
at emitMany (events.js:127:13)
at EventEmitter.emit (events.js:204:7)
at WebContents. (/Applications/Atom.app/Contents/Resources/electron.asar/browser/api/web-contents.js:256:13)
at emitTwo (events.js:106:13)
at WebContents.emit (events.js:194:7)
at metaToValue (/Applications/Atom.app/Contents/Resources/electron.asar/renderer/api/remote.js:234:13)
at Object.remoteMemberFunction (/Applications/Atom.app/Contents/Resources/electron.asar/renderer/api/remote.js:118:18)
at TouchBarManager._setTouchBar (/packages/tool-bar/lib/touch-bar-manager.js:86:29)
at _updateDebounce.setTimeout (/packages/tool-bar/lib/touch-bar-manager.js:38:50)
```

### Commands

```
-0:20.2.0 tree-view:add-file (span.name.icon.icon-file-directory)
2x -0:17.6.0 core:backspace (input.hidden-input)
-0:11.3.0 core:confirm (input.hidden-input)
```

### Non-Core Packages

```
activate-power-mode 2.7.0
aesthetic-ui 4.0.0
aligner-python 1.1.0
angular-2 0.2.6
angular-auto-import 0.3.5
angularjs 0.5.3
atom-diary 1.2.1
atom-ide-ui 0.11.0
atom-terminal 0.8.0
atom-typescript 12.3.8
city-lights-syntax 1.1.8
city-lights-ui 1.3.3
color-picker 2.3.0
color-tabs 0.1.8
emmet 2.4.3
fizzy 0.21.0
gloom 0.6.5
Hydrogen 2.4.1
ide-css 0.3.0
ide-python 0.9.2
ide-typescript 0.7.6
jumpy 4.2.0
monokai 0.24.0
organized 0.8.1
project-colorize 0.3.0
project-manager 3.3.5
python-jedi 0.3.8
python-tools 0.6.9
seti-syntax 1.1.3
seti-ui 1.10.0
tool-bar 1.1.7
unity-dark-syntax 0.1.4
unity-dark-ui 2.0.9
unity-ui 2.1.11
wordpress 0.2.0
wordpress-api 1.2.2
yeti-syntax 0.1.2
Zen 0.18.0
```

Start with packages/tool-bar/lib/touch-bar-manager.js, especially TouchBarManager._setTouchBar and the debounced update path named in the stack trace. Use the supplied Atom, Electron, and macOS versions and command sequence as reproduction leads; done means the missing remote-object error is reproduced or its lifecycle trigger is identified and the behavior is verified after the change.

Written by the indexing model from the issue text.