Move logging.h into base/logging.h.

Change-Id: Id68f85f7c3a71b156cb40dec63f94d4fb827f279
diff --git a/src/base/mutex.cc b/src/base/mutex.cc
index 16811d3..a5d890a 100644
--- a/src/base/mutex.cc
+++ b/src/base/mutex.cc
@@ -19,9 +19,9 @@
 #include <errno.h>
 #include <sys/time.h>
 
+#include "base/logging.h"
 #include "cutils/atomic.h"
 #include "cutils/atomic-inline.h"
-#include "logging.h"
 #include "runtime.h"
 #include "scoped_thread_state_change.h"
 #include "thread.h"