Check in jsoncpp.

Check in ab1e40f3bce061ea6f9bdc60351d6cde2a4f872b from
https://chromium.googlesource.com/external/jsoncpp/jsoncpp.git

This is the version used by Skia's test suite.

BUG:15087860

Change-Id: I16bf6ac927fa025b6527b48221d749484e1a04f4
diff --git a/test/data/test_array_01.expected b/test/data/test_array_01.expected
new file mode 100644
index 0000000..a341ff7
--- /dev/null
+++ b/test/data/test_array_01.expected
@@ -0,0 +1 @@
+.=[]