AU: Class to perform delta updates.
A class to perform delta updates and the associated unittests. Also,
change the delta diff generator executable to be able to apply a
delta, which is handy for debugging.
TEST=Attached unit test, hand-tested on real build images
BUG=552
Review URL: http://codereview.chromium.org/1718001
diff --git a/extent_writer_unittest.cc b/extent_writer_unittest.cc
index a35ba26..484d069 100644
--- a/extent_writer_unittest.cc
+++ b/extent_writer_unittest.cc
@@ -10,6 +10,7 @@
#include <vector>
#include <gtest/gtest.h>
#include "update_engine/extent_writer.h"
+#include "update_engine/graph_types.h"
#include "update_engine/test_utils.h"
#include "update_engine/utils.h"