Remove easy uses of //aos/mutex
I was hoping to get rid of it completely as one of the nontrivial users
of AOS_LOG, but need to write a compatible condition variable first.
Change-Id: I86c1c4084882bf789baabd0255e115d821154830
diff --git a/aos/logging/implementations_test.cc b/aos/logging/implementations_test.cc
index 058baab..6b85358 100644
--- a/aos/logging/implementations_test.cc
+++ b/aos/logging/implementations_test.cc
@@ -7,6 +7,8 @@
#include "aos/logging/printf_formats.h"
#include "aos/time/time.h"
+
+#include "glog/logging.h"
#include "gtest/gtest.h"
using ::testing::AssertionFailure;