[CodeHealth] Replace base::Bind() calls in KeepAliveScheduler classes

Bug: 1007635
Change-Id: I9efd01370fde3b5263ad5a2af7878ae46b0f86c7
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2558730Reviewed-by: Ryan Hansberry <hansberry@chromium.org>
Commit-Queue: Gavin Mak <gavinmak@google.com>
Cr-Commit-Position: refs/heads/master@{#831960}

chromeos/components/tether/keep_alive_scheduler.cc

@@ -67,8 +67,8 @@ void KeepAliveScheduler::OnActiveHostChanged(
     active_host_device_ = change_info.new_active_host;
     timer_->Start(FROM_HERE,
                   base::TimeDelta::FromMinutes(kKeepAliveIntervalMinutes),
-                  base::Bind(&KeepAliveScheduler::SendKeepAliveTickle,
-                             weak_ptr_factory_.GetWeakPtr()));
+                  base::BindRepeating(&KeepAliveScheduler::SendKeepAliveTickle,
+                                      weak_ptr_factory_.GetWeakPtr()));
     SendKeepAliveTickle();
   }
 }