Fixed building with a bazel with hdrs_check fixed again.

Change-Id: I015f66cd6e02e07efa367b96edd775015ac0abca
diff --git a/aos/common/logging/sizes.h b/aos/common/logging/sizes.h
new file mode 100644
index 0000000..6a4c7d5
--- /dev/null
+++ b/aos/common/logging/sizes.h
@@ -0,0 +1,9 @@
+#ifndef AOS_COMMON_LOGGING_SIZES_H_
+#define AOS_COMMON_LOGGING_SIZES_H_
+
+// This file exists so C code and context.h can both get at these constants...
+
+#define LOG_MESSAGE_LEN 400
+#define LOG_MESSAGE_NAME_LEN 100
+
+#endif  // AOS_COMMON_LOGGING_SIZES_H_