Site The Information reported that Google has expdressed interest in co-developing an Android chips (with its own designs). It would be quite a pain though, because it would require some big companies like Qualcomm to sacrifice some of its earnings.
Google wants to create a phone with integrated software and hardware.
There is a high probability that the first phone to use new chipset will be a Nexus device, as Nexus are products made by other companies directly for Google.