For where do I file a bug to Google about one of its Android (or iOS) SDK / products for developers?
Here is the link where you can report issues regarding google.
You can describe below issues to Google.
- I need assistance with my Google account.
- I want to remove content on Google Search, Youtube, or another service.
- I want to report a technical security bug in a Google product (SQLi, XSS, etc.).
- I want to report fraud, malware, or other problems not listed above.
If vulnerability is vaild and they successfully reproduce it you may get Bug Bounty.
Google will contact you within day or two.
Bug Report Link :
https://www.google.com/appserve/security-bugs/m2/new?rl=&key=
Steps :
- Select option for reporting bug.
- Enter your contact details.
- Select Google Product as affected.
- Enter how to reproduce that vulnerability
- Submit It.
Or
There is one more link provided by android to report bugs.
Hope it will help you.