Fix stylelint-config-standard issues in profiler/profilesSidebarTree.css
Fix stylelint-config-standard issues in profiler/profilesSidebarTree.css

Bug: chromium:1083142
Change-Id: I1da48497439dedbf37a79b3b340fc33860563494
Reviewed-on: https://chromium-review.googlesource.com/c/devtools/devtools-frontend/+/2264121
Reviewed-by: Mathias Bynens <17a2cbc4e33156874a9862b0f530521117e66a3d@chromium.org>
Commit-Queue: Peter Marshall <6d0eecbeb7fb9d172f49b4b32481d2466fd89429@chromium.org>

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