Refactor: Use = for copy constructor

Use = to invoke a copy/move constructor, as both sides have the same type.

Change-Id: I89d5b6d0fe1987d0a86583216d4febefea856ba6
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1510638
Commit-Queue: Fernando Serboncini <fserb@chromium.org>
Auto-Submit: Darwin Huang <huangdarwin@chromium.org>
Reviewed-by: Fernando Serboncini <fserb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#639994}
1 file changed