libchromeos: Add osrelease_reader libchromeos-core.

BUG: 24585672
TEST: compiles. Unit tests pass.

Change-Id: I7d84a673c85ba8955e03598f2fe4577de7ad5fef
diff --git a/Android.mk b/Android.mk
index 0f082e5..c6dc921 100644
--- a/Android.mk
+++ b/Android.mk
@@ -26,6 +26,7 @@
     chromeos/message_loops/message_loop.cc \
     chromeos/message_loops/message_loop_utils.cc \
     chromeos/mime_utils.cc \
+    chromeos/osrelease_reader.cc \
     chromeos/process.cc \
     chromeos/process_information.cc \
     chromeos/secure_blob.cc \
@@ -104,6 +105,7 @@
     chromeos/map_utils_unittest.cc \
     chromeos/message_loops/fake_message_loop_unittest.cc \
     chromeos/mime_utils_unittest.cc \
+    chromeos/osrelease_reader_unittest.cc \
     chromeos/process_reaper_unittest.cc \
     chromeos/process_unittest.cc \
     chromeos/secure_blob_unittest.cc \