ubuntu: implement inject* functions

src/ubuntu/InAppBrowser_escapeScript.js

@@ -0,0 +1,8 @@
+oxide.addMessageHandler("EXECUTE", function(msg) {
+    var code = msg.args.code;
+    try {
+        msg.reply({result: eval(code)});
+    } catch(e) {
+        msg.error("Code threw exception: \"" + e + "\"");
+    }
+});