Fix scrolling behavior of resource sidebar
Fix scrolling behavior of resource sidebar

This prevents flickering of the side-bar in situations where the
height of the sidebar is around the size it should be to get rid
of the scroll bar.

Bug: chromium:1152713
Change-Id: Idc0808ed87557ae92b67bcd8f08f4fa582d7088d
Reviewed-on: https://chromium-review.googlesource.com/c/devtools/devtools-frontend/+/2560241
Commit-Queue: Sigurd Schneider <f04d242e109628a27a0f75fd49a87722bcf291fd@chromium.org>
Reviewed-by: vmpstr <8725865b9599790ed3778b39dc8e6dce7c901da3@chromium.org>
Reviewed-by: Mathias Bynens <17a2cbc4e33156874a9862b0f530521117e66a3d@chromium.org>

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