[update_engine] Update to use not-hideously-old logging API from chrome

BUG=None
TEST=compile

Change-Id: Ieed8952b6806a72b59e16c1579f7293b6a98157a

Review URL: http://codereview.chromium.org/3170010
diff --git a/action.h b/action.h
index 7ce9f60..104ef9e 100644
--- a/action.h
+++ b/action.h
@@ -9,7 +9,7 @@
 #include <tr1/memory>
 #include <iostream>
 #include "base/basictypes.h"
-#include "chromeos/obsolete_logging.h"
+#include "base/logging.h"
 #include "update_engine/action_processor.h"
 #include "update_engine/action_pipe.h"