DevTools: Add support for //# sourceURL (sourceMappingURL) comments and deprecate //@ ones

Source/devtools/front_end/TestController.js

 /*
  * Copyright (C) 2009 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 19 matching lines @@
 
 WebInspector.evaluateForTestInFrontend = function(callId, script)
 {
     if (!InspectorFrontendHost.isUnderTest())
         return;
 
     function invokeMethod()
     {
         var message;
         try {
-            script = script + "//@ sourceURL=evaluateInWebInspector" + callId + ".js";
+            script = script + "//# sourceURL=evaluateInWebInspector" + callId + ".js";
             var result = window.eval(script);
             message = typeof result === "undefined" ? "\"<undefined>\"" : JSON.stringify(result);
         } catch (e) {
             message = e.toString();
         }
         RuntimeAgent.evaluate("didEvaluateForTestInFrontend(" + callId + ", " + message + ")", "test");
     }
     InspectorBackend.runAfterPendingDispatches(invokeMethod);
 }