Add pfaffe@ alexrudenko@ to extensions owners
Add pfaffe@ alexrudenko@ to extensions owners

Bug: none
Change-Id: I559211ca2516abde8a21fea4656966048d509f7f
Reviewed-on: https://chromium-review.googlesource.com/c/devtools/devtools-frontend/+/3660428
Commit-Queue: Alex Rudenko <d8d88e7d7e77f69e23d1d1432231196fb8e02a62@chromium.org>
Reviewed-by: Andrey Kosyakov <03b08926e49d80331ab322c2b9e0332109fbfd39@chromium.org>

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