Remove UrlFetcher from remoting and use the one in net instead.

BUG=133790
TEST=Stop and restart the Me2Me host. It should still work.


Review URL: https://chromiumcodereview.appspot.com/10637008

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@143798 0039d316-1c4b-4281-b951-d872f2087c98
void UrlFetcher::Core::Detach() {
  DCHECK(delegate_message_loop_->BelongsToCurrentThread());
  network_task_runner_->PostTask(
      FROM_HERE, base::Bind(&UrlFetcher::Core::CancelRequest, this));
  done_callback_.Reset();
}

void UrlFetcher::Core::Detach() {
  DCHECK(delegate_message_loop_->BelongsToCurrentThread());
  network_task_runner_->PostTask(
      FROM_HERE, base::Bind(&UrlFetcher::Core::CancelRequest, this));
  done_callback_.Reset();
}
