This makes no sense to me.
ABP is already publishing a version using a declarativeNetRequest-like API, it's in the Mac App Store[1], so clearly it's not going to "get rid of ABP".
Google benefits from ABP and AdBlock[2] being the most used content blockers, as they do not block Google ads by default, and do not block trackers/data miners out of the box.
If Google (rightly) deems content blockers as unavoidable, it sure would want people to install the ones which are not blocking its ads and trackers by default.
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[1] https://itunes.apple.com/us/app/adblock-plus-for-safari/id14...
[2] The two most-used content blockers as per Chrome Web Store.