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This removes a bunch of methods/members that aren't used (anymore).

Bug: 859874
Change-Id: Ia3d0c3be3b1bfdaa9230a26e0ad44c9ea359bf43
Reviewed-on: https://chromium-review.googlesource.com/c/1326004Reviewed-by: Mohamed Amir Yosef <mamir@chromium.org>
Commit-Queue: Marc Treib <treib@chromium.org>
Cr-Commit-Position: refs/heads/master@{#606442}