Google reportedly prevented Motorola from building a phone that integrated tightly with Google's other services.
While Motorola was keen on working with Google's natural language processing group to improve voice-command recognition in the Moto X smartphone, Google was not very supportive of the company's ambitions.
According to Green Bot, the company also approached Google's YouTube and Google+ teams to build tight integration with those services into the Moto X, again to no avail.
Also, Google played very little role in Samsung-Motorola patent battle.