[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_pipe.h b/action_pipe.h
index 4681627..a59c210 100644
--- a/action_pipe.h
+++ b/action_pipe.h
@@ -11,7 +11,7 @@
 #include <string>
 #include <tr1/memory>
 #include "base/basictypes.h"
-#include "chromeos/obsolete_logging.h"
+#include "base/logging.h"
 
 // The structure of these classes (Action, ActionPipe, ActionProcessor, etc.)
 // is based on the KSAction* classes from the Google Update Engine code at