Implement interface for bionic benchmarks.

Test: Unit tests.
Change-Id: Ic61932f61ddd572e2f045b601f9da6e090cdc45d
diff --git a/benchmarks/suites/test_medium.xml b/benchmarks/suites/test_medium.xml
new file mode 100644
index 0000000..9528af3
--- /dev/null
+++ b/benchmarks/suites/test_medium.xml
@@ -0,0 +1,16 @@
+<fn>
+  <name>BM_string_memcmp</name>
+  <args>AT_ALIGNED_TWOBUF</args>
+</fn>
+<fn>
+  <name>BM_math_sqrt</name>
+</fn>
+<fn>
+  <name>BM_string_memcpy</name>
+  <iterations>25</iterations>
+  <args>512 4 4</args>
+</fn>
+<fn>
+  <name>BM_property_get</name>
+  <args>1</args>
+</fn>