Clean up unnecessary usages of "this->"

Bug: 641437
Change-Id: If5487d9e3fcd1e21bc47057c59e13627524aa4a3
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1682631
Reviewed-by: Fredrik Söderquist <fs@opera.com>
Commit-Queue: Edvard Thörnros <edvardt@opera.com>
Cr-Commit-Position: refs/heads/master@{#674044}
1 file changed