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My suspicion is history initialization is failing. I'm adding some
logging to verify that.

No doubt if faviconservice creation returns null there will be other
places assuming non-null that need to be fixed.

BUG=1024959, 1052127
TEST=none

Change-Id: I425e0b32d8543f46c1db7f18b232bbd65c898b94
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2057093Reviewed-by: Wez <wez@chromium.org>
Commit-Queue: Scott Violet <sky@chromium.org>
Cr-Commit-Position: refs/heads/master@{#741561}