[DevTools] UI for blocked URLs.

Source/devtools/front_end/ui/Toolbar.js

Index: Source/devtools/front_end/ui/Toolbar.js
diff --git a/Source/devtools/front_end/ui/Toolbar.js b/Source/devtools/front_end/ui/Toolbar.js
index 331056bfd793d36ab517514dfb7d13e95c83f9bc..5e616c398a7a7e05b8a38176b0532e32b5fad9b9 100644
--- a/Source/devtools/front_end/ui/Toolbar.js
+++ b/Source/devtools/front_end/ui/Toolbar.js
@@ -750,6 +750,19 @@ WebInspector.ToolbarSeparator.prototype = {
 
 /**
  * @constructor
+ * @extends {WebInspector.ToolbarItem}
+ */
+WebInspector.ToolbarSpace = function()
+{
+    WebInspector.ToolbarItem.call(this, createElementWithClass("div", "toolbar-space"));
+}
+
+WebInspector.ToolbarSpace.prototype = {
+    __proto__: WebInspector.ToolbarItem.prototype
+}
+
+/**
+ * @constructor
  * @extends {WebInspector.ToolbarButtonBase}
  * @param {string} title
  * @param {string} className