There's no reason to think that you're safe even if it were Apache-licensed. One of the things that was made clear in Oracle v. Google is that Oracle effectively treats litigation as an essential expense for exploring all revenue sources, leaving others susceptible to suits whether they have merit or not. Compounding this latter concern was that another thing made clear is that the terms of the respective licenses is something that Oracle doesn't consider important. Refer to McNealy testifying for example that commercial use of even GPL-licensed work is prohibited (despite the terms of the license not supporting this stance).
Oracle v. Google has nothing to do with it (Java’s licence at the time explicitly disallowed mobile usage)
Do you have an examples that give rise to any sort of concern about the usage of GPL-licenced code (regardless of code owner)?
It's like we're not even having the same conversation. McNealy, founder of Sun, testified under oath that GPL doesn't permit commercial use. What was unclear about this the first time it was stated?
