Android: Pass Credential Pragmatically to browser or WebView

I have a credential list , which all are stored by the user himself only, and user need to login their desired domain and no need to enter user name and password over there, it should work like remember password in webBrowser...

So What procedure I have to follow to solve this... as per example I am a user and i have added some credential for fast login further.

eg:
1)website :gmail.com ,user_name: abc@gmail.com , pass: abcdef
2)website :ymail.com ,user_name: abcd@ymail.com, pass: abcdefgh
and so on...

and I have selected gmail from my list... then it should have to visit the gmail.com and pass these two info (user_name and pass) for login...