shill: Replace VLOG with SLOG.

This CL replaces all uses of VLOG(level) with SLOG(scope, level) with
the same verbose level and an appropriate scope for each affected
logging statement.

BUG=chromium-os:29641
TEST=Build and run unit tests. Test scope logging with ff_debug.

Change-Id: Ifdcf1faa2a309bcbd9ee369a66179ce9c7f1ad19
Reviewed-on: https://gerrit.chromium.org/gerrit/20629
Commit-Ready: Ben Chan <benchan@chromium.org>
Reviewed-by: Ben Chan <benchan@chromium.org>
Tested-by: Ben Chan <benchan@chromium.org>
diff --git a/shill_daemon.cc b/shill_daemon.cc
index 5549327..ce125fc 100644
--- a/shill_daemon.cc
+++ b/shill_daemon.cc
@@ -18,6 +18,7 @@
 #include "shill/proxy_factory.h"
 #include "shill/routing_table.h"
 #include "shill/rtnl_handler.h"
+#include "shill/scope_logger.h"
 #include "shill/shill_config.h"
 
 using std::string;
@@ -54,9 +55,9 @@
 
 void Daemon::Run() {
   Start();
-  VLOG(1) << "Running main loop.";
+  SLOG(Daemon, 1) << "Running main loop.";
   dispatcher_.DispatchForever();
-  VLOG(1) << "Exited main loop.";
+  SLOG(Daemon, 1) << "Exited main loop.";
   Stop();
 }