Remove include of base/containers/hash_tables.h except base/

Added some unordered_map/unordered_set include instead to fix build.

Bug: 576864
TBR: thakis@chromium.org
Change-Id: I8a23d908af392ced8fb2df0073e64e8020acc5fd
Reviewed-on: https://chromium-review.googlesource.com/c/1398161
Commit-Queue: Takuto Ikuta <tikuta@chromium.org>
Reviewed-by: Nico Weber <thakis@chromium.org>
Cr-Original-Commit-Position: refs/heads/master@{#620639}
Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src
Cr-Mirrored-Commit: fc262dcd403c74cf3e22896f32d9723ba463f0b6
8 files changed