[Webkit-unassigned] [Bug 193501] New: Web Inspector: Fix TreeOutline TypeError:​ this._indexesForSubtree is not a function

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=193501

            Bug ID: 193501
           Summary: Web Inspector: Fix TreeOutline TypeError:​
                    this._indexesForSubtree is not a function
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: All
                OS: All
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Web Inspector
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: mattbaker at apple.com
                CC: inspector-bugzilla-changes at group.apple.com

This bug was introduced in https://webkit.org/b/192917.

Steps to Reproduce:
1. Inspect daringfireball.net
2. Open Elements tab
3. Reload the page

TypeError:​ this._indexesForSubtree is not a function. (In 'this._indexesForSubtree(child)​', 'this._indexesForSubtree' is undefined)​ (at TreeOutline.js:​332:​53)​
    removeChildAtIndex @ TreeOutline.js:​332:​53
    _updateChildren @ DOMTreeElement.js:​494:​36
    _updateChildren @ [native code]​
    getChildNodes @ DOMNode.js:​490:​25
    updateChildren @ DOMTreeElement.js:​420:​45
    _updateModifiedNodes @ DOMTreeUpdater.js:​125:​49
    performWork @ Utilities.js:​1501:​47

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