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

Source/core/inspector/InjectedScriptSource.js

Index: Source/core/inspector/InjectedScriptSource.js
diff --git a/Source/core/inspector/InjectedScriptSource.js b/Source/core/inspector/InjectedScriptSource.js
index 5a8b55725a598bbe4fbc7c94ec62126c03476211..64c39f7c5585f4e420d80bdd10f3a5de88e87e1b 100644
--- a/Source/core/inspector/InjectedScriptSource.js
+++ b/Source/core/inspector/InjectedScriptSource.js
@@ -1383,9 +1383,19 @@ CommandLineAPIImpl.prototype = {
 
     copy: function(object)
     {
-        if (injectedScript._subtype(object) === "node")
-            object = object.outerHTML;
-        var string = toString(object);
+        var string;
+        if (injectedScript._subtype(object) === "node") {
+            string = object.outerHTML;
+        } else if (injectedScript.isPrimitiveValue(object)) {
+            string = toString(object);
+        } else {
+            try {
+                string = JSON.stringify(object, null, "  ");
+            } catch (e) {
+                string = toString(object);
+            }
+        }
+
         var hints = { copyToClipboard: true };
         var remoteObject = injectedScript._wrapObject(string, "")
         InjectedScriptHost.inspect(remoteObject, hints);