DevTools: Ensure mailto links are copied correctly
DevTools: Ensure mailto links are copied correctly

Currently mailto links are not special-cased like data: or javascript:, which is
incorrect as they get resolved like relative URLs. This patch updates the
behavior to copy mailto links as-is.

Bug: 968024
Change-Id: Ie84074dfa6a5f6572e85bdaa7c012608433f0c06
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1674157
Reviewed-by: Joel Einbinder <bab755abe9fee48fe544272e55f73517d4e4a725@chromium.org>
Commit-Queue: Paul Lewis <8915f5d5c39a08c5a3e8a8d7314756e4580816f9@chromium.org>
Cr-Original-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#672480}
Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src
Cr-Mirrored-Commit: da82e37b675bf2244604b3c583c8e49392aad6cb

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