[shill] Use base/logging.h, but with syslog support.

Also, go to base/command_line.h; I love gflags, but base/logging.h requires CommandLine, and having two
ways to handle command line flags seems bad.  cros-disks does it, though...

BUG=None
TEST=unit tests

Change-Id: I2a88926366d324a102dfe50583d244c49f33af08
Reviewed-on: http://gerrit.chromium.org/gerrit/602
Reviewed-by: Chris Masone <cmasone@chromium.org>
Tested-by: Chris Masone <cmasone@chromium.org>
diff --git a/manager.cc b/manager.cc
index 2113740..1c03221 100644
--- a/manager.cc
+++ b/manager.cc
@@ -3,11 +3,12 @@
 // found in the LICENSE file.
 
 #include <time.h>
-
 #include <stdio.h>
+
 #include <string>
 
-#include "shill/shill_logging.h"
+#include <base/logging.h>
+
 #include "shill/control_interface.h"
 #include "shill/manager.h"
 
@@ -18,8 +19,9 @@
 		 EventDispatcher */* dispatcher */)
   : adaptor_(control_interface->CreateManagerAdaptor(this)),
     running_(false) {
-  // Initialize Interface montior, so we can detect new interfaces
-  SHILL_LOG(INFO, SHILL_LOG_MANAGER) << "Manager initialized.";
+  // Initialize Interface monitor, so we can detect new interfaces
+  // TODO(cmasone): change this to VLOG(2) once we have it.
+  LOG(INFO) << "Manager initialized.";
 }
 
 Manager::~Manager() {