libbase: add host properties support.

Move init and libprocessgroup away from their existing hacks.

Bug: N/A
Test: ran tests
Change-Id: Ifabdd38e0cc4ab2582f1ea59d32159d386f48eb6
diff --git a/init/service.cpp b/init/service.cpp
index 0e08d9b..c9ed87f 100644
--- a/init/service.cpp
+++ b/init/service.cpp
@@ -32,6 +32,7 @@
 #include <android-base/file.h>
 #include <android-base/logging.h>
 #include <android-base/parseint.h>
+#include <android-base/properties.h>
 #include <android-base/stringprintf.h>
 #include <android-base/strings.h>
 #include <android-base/unique_fd.h>
@@ -46,8 +47,6 @@
 #if defined(__ANDROID__)
 #include <sys/system_properties.h>
 
-#include <android-base/properties.h>
-
 #include "init.h"
 #include "property_service.h"
 #else