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This CL adds a unit tests for the unified consent service. The current
tests only covers the non-personalized services. It should be enhanced
to also include the sync-related part once teh unified consent starts
managing the sync state.

This CL also makes the following changes:
* replaces the dependencies of the service on profile_sync_service
with a dependency on the more generic sync_service
* enabled Url-keyed anonymized data collection when unified consent
is enabled.

Bug: 823809
Change-Id: I2ab27429272ecccfbd254ffc4100234ce95623df
Reviewed-on: https://chromium-review.googlesource.com/1122858
Commit-Queue: Mihai Sardarescu <msarda@chromium.org>
Reviewed-by: Thomas Tangl <tangltom@chromium.org>
Cr-Commit-Position: refs/heads/master@{#572155}