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/scope_logger.cc b/scope_logger.cc
index e3951cf..1865ed8 100644
--- a/scope_logger.cc
+++ b/scope_logger.cc
@@ -23,18 +23,24 @@
   "cellular",
   "connection",
   "crypto",
+  "daemon",
   "dbus",
   "device",
-  "dhclient",
+  "dhcp",
+  "dns",
   "ethernet",
+  "http",
+  "httpproxy",
   "inet",
   "manager",
   "metrics",
   "modem",
   "portal",
+  "power",
   "profile",
-  "resolv",
-  "resolvfiles",
+  "property",
+  "resolver",
+  "route",
   "rtnl",
   "service",
   "storage",