Update third_party/devtools-frontend 2cf0518ef4..879d97b05d

https://chromium.googlesource.com/devtools/devtools-frontend/+log/2cf0518ef4..879d97b05d

TBR=tvanderlippe@chromium.org

Change-Id: I11df43bcd455377735bb270f916551e7714ffb47
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1899766Reviewed-by: Yang Guo <yangguo@chromium.org>
Reviewed-by: Tim van der Lippe <tvanderlippe@chromium.org>
Commit-Queue: Yang Guo <yangguo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#712596}

DEPS

@@ -243,7 +243,7 @@ vars = {
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling devtools-frontend
   # and whatever else without interference from each other.
-  'devtools_frontend_revision': '2cf0518ef4462b1f51dc447f7797f8191c4a365f',
+  'devtools_frontend_revision': '879d97b05dfe9f26ede820b0296b125d4a68e5ff',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling libprotobuf-mutator
   # and whatever else without interference from each other.