Implementation of ONC signature, validator and normalizer.

chrome/test/data/chromeos/network_settings/invalid.onc

Index: chrome/test/data/chromeos/network_settings/invalid.onc
diff --git a/chrome/test/data/chromeos/network_settings/invalid.onc b/chrome/test/data/chromeos/network_settings/invalid.onc
new file mode 100644
index 0000000000000000000000000000000000000000..64219eed489b238ab7b52a032a7bf176748344c5
--- /dev/null
+++ b/chrome/test/data/chromeos/network_settings/invalid.onc
@@ -0,0 +1,77 @@
+{
+    "managed-network-repaired": {
+        "Recommended": [],
+        "GUID": "guid",
+        "Type": "Ethernet",
+        "Name": "name",
+        "Ethernet": {
+            "Authentication": "None"
+        }
+    },
+    "managed-network-unknown-fieldname": {
+        "abc": "def",
+        "Recommended": [],
+        "GUID": "guid",
+        "Type": "Ethernet",
+        "Name": "name",
+        "Ethernet": {
+            "Authentication": "None"
+        }
+    },
+    "managed-network-unknown-recommended": {
+        "Recommended": ["abc"],
+        "GUID": "guid",
+        "Type": "Ethernet",
+        "Name": "name",
+        "Ethernet": {
+            "Authentication": "None"
+        }
+    },
+    "managed-network-dict-recommended": {
+        "Recommended": ["Ethernet"],
+        "GUID": "guid",
+        "Type": "Ethernet",
+        "Name": "name",
+        "Ethernet": {
+            "Authentication": "None"
+        }
+    },
+    "managed-network-missing-required": {
+        "Recommended": [],
+        "Type": "Ethernet",
+        "Name": "name",
+        "Ethernet": {
+            "Authentication": "None"
+        }
+    },
+    "network-repaired": {
+        "Type": "Ethernet",
+        "Name": "name",
+        "Ethernet": {
+            "Authentication": "None"
+        }
+    },
+    "network-unknown-fieldname": {
+        "abc": "def",
+        "Type": "Ethernet",
+        "Name": "name",
+        "Ethernet": {
+            "Authentication": "None"
+        }
+    },
+    "network-missing-required": {
+        "Type": "Ethernet",
+        "Name": "name",
+        "Ethernet": {
+            "Authentication": "None"
+        }
+    },
+    "network-illegal-recommended": {
+        "Recommended": [],
+        "Type": "Ethernet",
+        "Name": "name",
+        "Ethernet": {
+            "Authentication": "None"
+        }
+    },
+}