Turn autofill on by default at compile time and make it a browser setting.

Make autofill a runtime option configured through the browser.

Required a corresponding change in frameworks/base -
https://android-git.corp.google.com/g/65573
and packages/apps/browser -
https://android-git.corp.google.com/g/65579

Change-Id: I905b464a6338ff27b02f16d0b9a718154c3c98c1
6 files changed