Deflake click-handler by waiting for a DOM-connected element
Deflake click-handler by waiting for a DOM-connected element

Fixed: 1349290
Change-Id: Ic06b75ff60da984a86f8459581ab975a3e73d1ef
Reviewed-on: https://chromium-review.googlesource.com/c/devtools/devtools-frontend/+/3833735
Reviewed-by: Alex Rudenko <d8d88e7d7e77f69e23d1d1432231196fb8e02a62@chromium.org>
Commit-Queue: Philip Pfaffe <639a645feae3653b7aaefa0387217d375f2f82ff@chromium.org>

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