Add AStorageManager API to NDK

AStorageManager allows users of the NDK to access OBBs for now.

Change-Id: I8a25757901a175aa90a9f3e8c2a5db7873e8615e
diff --git a/native/android/Android.mk b/native/android/Android.mk
index bd2b27a..cc35a3a 100644
--- a/native/android/Android.mk
+++ b/native/android/Android.mk
@@ -12,7 +12,8 @@
     looper.cpp \
     native_activity.cpp \
     native_window.cpp \
-    sensor.cpp
+    sensor.cpp \
+    storage_manager.cpp
 
 LOCAL_SHARED_LIBRARIES := \
     libcutils \
@@ -23,6 +24,9 @@
     libsurfaceflinger_client \
     libandroid_runtime
 
+LOCAL_STATIC_LIBRARIES := \
+    libstorage
+
 LOCAL_C_INCLUDES += \
     frameworks/base/native/include \
     frameworks/base/core/jni/android \