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

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

Index: LayoutTests/http/tests/inspector/inspector-test.js
diff --git a/LayoutTests/http/tests/inspector/inspector-test.js b/LayoutTests/http/tests/inspector/inspector-test.js
index 35e948c72a732f096bc926b65e8a35e014003cb0..180a27fbc1d6bb809301aea642d587631f213aab 100644
--- a/LayoutTests/http/tests/inspector/inspector-test.js
+++ b/LayoutTests/http/tests/inspector/inspector-test.js
@@ -51,10 +51,14 @@ InspectorTest.evaluateInConsole = function(code, callback)
     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)