Update third_party/devtools-frontend 7a52be2a83..c7284e19a2

https://chromium.googlesource.com/devtools/devtools-frontend/+log/7a52be2a83..c7284e19a2

TBR=aerotwist@chromium.org

Change-Id: Iea2aa69554eeb2b3b5012f4006abcfd8b4673acc
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1891293Reviewed-by: Yang Guo <yangguo@chromium.org>
Commit-Queue: Yang Guo <yangguo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#711175}

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': '7a52be2a83e72c39382b8c1faca3d7e09f3353d5',
+  'devtools_frontend_revision': 'c7284e19a2c6c0cd6dfd88548b274fc763999e75',
   # 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.