GitLab

Update references to ExtensionService in c/b/media_galleries to use
extensions::ExtensionService.

There should be no behavior change as a result of this CL.

Bug: 117261
Change-Id: I4a097c316ead2833466274cca7c2c36e8ef0c8c0
Reviewed-on: https://chromium-review.googlesource.com/1080043Reviewed-by: Lei Zhang <thestig@chromium.org>
Commit-Queue: Devlin <rdevlin.cronin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#563091}