Update third_party/devtools-frontend c20eb36aa7..77f2a9d8d6

https://chromium.googlesource.com/devtools/devtools-frontend/+log/c20eb36aa7..77f2a9d8d6

TBR=aerotwist@chromium.org

Change-Id: Idb841a0cbca580699afc971ef0ebcb84661c4226
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1882315Reviewed-by: Yang Guo <yangguo@chromium.org>
Commit-Queue: Yang Guo <yangguo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#709846}

DEPS

@@ -242,7 +242,7 @@ 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': 'c20eb36aa74460b2cd476e2ec4af675e66e62f00',
+  'devtools_frontend_revision': '77f2a9d8d6ebe07576736a9b8a073141769e45a8',
   # 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.