[shill] Convert LOG(INFO) to VLOG() where appropriate

BUG=chromium-os:15329
TEST=emerge

Change-Id: I30176f5217a0e2fe48b962857e9f34f822ae50aa
Reviewed-on: http://gerrit.chromium.org/gerrit/906
Reviewed-by: Chris Masone <cmasone@chromium.org>
Tested-by: Chris Masone <cmasone@chromium.org>
diff --git a/manager.cc b/manager.cc
index 141546b..19ff5f3 100644
--- a/manager.cc
+++ b/manager.cc
@@ -21,8 +21,7 @@
     device_info_(dispatcher),
     running_(false) {
   // Initialize Interface monitor, so we can detect new interfaces
-  // TODO(cmasone): change this to VLOG(2) once we have it.
-  LOG(INFO) << "Manager initialized.";
+  VLOG(2) << "Manager initialized.";
 }
 
 Manager::~Manager() {}