Bot Browser files moved to /bot/browser/

because android files will be a different and will need to add more files for Android.

There was a CL to move the browser files form bot/browser/ to /bot/ as i thought it will be the same files used for Android.

R=andresp@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/23529004

git-svn-id: http://webrtc.googlecode.com/svn/trunk@7119 4adac7df-926f-26a2-2b94-8c16560cd09d