JSON Schema Compiler: Added event compilation.

tools/json_schema_compiler/test/callbacks.json

Index: tools/json_schema_compiler/test/callbacks.json
diff --git a/tools/json_schema_compiler/test/objects.json b/tools/json_schema_compiler/test/callbacks.json
similarity index 53%
copy from tools/json_schema_compiler/test/objects.json
copy to tools/json_schema_compiler/test/callbacks.json
index 8fb20b408343726956dad03917c47b6b610ac730..06455b99e056928f42356317f0fe53b61bfcd253 100644
--- a/tools/json_schema_compiler/test/objects.json
+++ b/tools/json_schema_compiler/test/callbacks.json
@@ -1,30 +1,14 @@
 [
   {
-    "namespace": "objects",
+    "namespace": "callbacks",
     "types": [],
     "functions": [
       {
-        "name": "objectParam",
+        "name": "returnsNothing",
         "type": "function",
-        "description": "Takes an object.",
+        "description": "Takes nothing. Returns nothing.",
         "parameters": [
           {
-            "name": "info",
-            "type": "object",
-            "properties": {
-              "strings": {
-                "type": "array",
-                "items": {"type": "string"}
-              },
-              "integer": {
-                "type": "integer"
-              },
-              "boolean": {
-                "type": "boolean"
-              }
-            }
-          },
-          {
             "name": "callback",
             "type": "function",
             "parameters": []
@@ -41,7 +25,34 @@
             "type": "function",
             "parameters": [
               {
-                "name": "info",
+                "name": "someObject",
+                "type": "object",
+                "properties": {
+                  "state": {
+                    "type": "string",
+                    "enum": ["foo", "bar", "baz"]
+                  }
+                }
+              }
+            ]
+          }
+        ]
+      },
+      {
+        "name": "returnsMultiple",
+        "description": "Returns an object.",
+        "type": "function",
+        "parameters": [
+          {
+            "name": "callback",
+            "type": "function",
+            "parameters": [
+              {
+                "name": "someInteger",
+                "type": "integer"
+              },
+              {
+                "name": "someObject",
                 "type": "object",
                 "properties": {
                   "state": {