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Now ArcIntentHelperBridge can be obtained via ArcServiceManager.
So, LocalActivityResolver can be merged into ArcServiceManager
to get rid of unnecessary reference from ArcServiceManager to it.

BUG=739097
TEST=Ran trybot.

Change-Id: Idaee93706e14b268feb28d98811f7b290de2165e
Reviewed-on: https://chromium-review.googlesource.com/566785Reviewed-by: Yusuke Sato <yusukes@chromium.org>
Commit-Queue: Hidehiko Abe <hidehiko@chromium.org>
Cr-Commit-Position: refs/heads/master@{#485858}