Update third_party/devtools-frontend 70f122128c..a2ca5d5c44

https://chromium.googlesource.com/devtools/devtools-frontend/+log/70f122128c..a2ca5d5c44

TBR=aerotwist@chromium.org

Change-Id: I1dace02c1820a41d95e4cda22451126dbd82301d
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1886678Reviewed-by: Yang Guo <yangguo@chromium.org>
Commit-Queue: Yang Guo <yangguo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#710342}

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': '70f122128c1413406b1eb8907449684f164d156f',
+  'devtools_frontend_revision': 'a2ca5d5c442a1ff23ff228af8c0143887f6722a6',
   # 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.