[DevTools] Improved console.copy command to handle JSON.stringifyable objects.

LayoutTests/http/tests/inspector/inspector-test.js

 var initialize_InspectorTest = function() {
 
 var results = [];
 var resultsSynchronized = false;
 
 function consoleOutputHook(messageType)
 {
     InspectorTest.addResult(messageType + ": " + Array.prototype.slice.call(arguments, 1));
 }
 
@@ skipping 33 matching lines @@
 
 InspectorTest.evaluateInConsole = function(code, callback)
 {
     callback = InspectorTest.safeWrap(callback);
 
     WebInspector.consoleView.visible = true;
     WebInspector.consoleView.prompt.text = code;
     var event = document.createEvent("KeyboardEvent");
     event.initKeyboardEvent("keydown", true, true, null, "Enter", "");
     WebInspector.consoleView.prompt.proxyElement.dispatchEvent(event);
-    InspectorTest.addConsoleSniffer(
-        function(commandResult) {
+    function sniffer(commandResult) {
+        if (commandResult.type === "result")
             callback(commandResult.toMessageElement().textContent);
-        });
+        else
+            InspectorTest.addConsoleSniffer(sniffer);

[pfeldman, 2013/12/05 17:29:54]

You can't add a sniffer from within sniffer callback.

+    }
+
+    InspectorTest.addConsoleSniffer(sniffer);
 }
 
 InspectorTest.evaluateInConsoleAndDump = function(code, callback)
 {
     callback = InspectorTest.safeWrap(callback);
 
     function mycallback(text)
     {
         InspectorTest.addResult(code + " = " + text);
         callback(text);
@@ skipping 566 matching lines @@
     evaluateInWebInspector: function(callId, script)
     {
         window.opener.postMessage(["evaluateInWebInspector", callId, script], "*");
     },
 
     display: function() { }
 }
 
 if (!window.testRunner && window.opener)
     window.testRunner = new StandaloneTestRunnerStub();