AU: Common code to parse simple key/value store files

src/platform/update_engine/SConstruct

Index: src/platform/update_engine/SConstruct
diff --git a/src/platform/update_engine/SConstruct b/src/platform/update_engine/SConstruct
index 1cf837adb737c62a6d516faf407d01d6e74addfb..53004abca45d7f54bb91a0914a0653d098dbc703 100644
--- a/src/platform/update_engine/SConstruct
+++ b/src/platform/update_engine/SConstruct
@@ -213,6 +213,7 @@ sources = Split("""action_processor.cc
                    omaha_response_handler_action.cc
                    postinstall_runner_action.cc
                    set_bootable_flag_action.cc
+                   simple_key_value_store.cc
                    split_file_writer.cc
                    subprocess.cc
                    tarjan.cc
@@ -245,6 +246,7 @@ unittest_sources = Split("""action_unittest.cc
                             omaha_response_handler_action_unittest.cc
                             postinstall_runner_action_unittest.cc
                             set_bootable_flag_action_unittest.cc
+                            simple_key_value_store_unittest.cc
                             split_file_writer_unittest.cc
                             subprocess_unittest.cc
                             tarjan_unittest.cc