testing adding an extension api

chrome/common/extensions/api/myapi.idl

+// Put at least one comment line before 'namespace' to avoid a bug in the .idl compiler.
+namespace myapi {
+  dictionary BazOptions {
+    // Describes what the id argument means.
+    long id;
+    // Describes what the s argument means.
+    DOMString s;
+  };
+
+  dictionary BazResult {
+    long x;
+    long y;
+  };
+
+  callback BazCallback = void (BazResult result);
+
+  interface Functions {
+    // An interesting comment describing what the baz operation is.
+    // Note that this function can take multiple input arguments, including things like
+    // long and DOMString, but they have been elided for simplicity.
+    static void doBaz(BazOptions options, BazCallback callback);
+  };
+};