Removed ReplaceResultBuilder.
Removed ReplaceResultBuilder.

Most of its code was dead, and the remaining part was a simple
one-liner, which is now inlined at its single call-site.

R=yangguo@chromium.org

Review URL: https://codereview.chromium.org/17101021

git-svn-id: b158db1e4b4ab85d4c9e510fdef4b1e8c614b15b@15200 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

UniversalFuture/moosh,UniversalFuture/moosh,UniversalFuture/moosh,UniversalFuture/moosh