DevTools: Decouple AdvancedApp from Toolbox

Source/devtools/front_end/toolbox/ToolboxDelegate.js

Index: Source/devtools/front_end/toolbox/ToolboxDelegate.js
diff --git a/Source/devtools/front_end/toolbox/ToolboxDelegate.js b/Source/devtools/front_end/toolbox/ToolboxDelegate.js
new file mode 100644
index 0000000000000000000000000000000000000000..ae5941c433b3cbc98f7a6c73b391eaa5f6827914
--- /dev/null
+++ b/Source/devtools/front_end/toolbox/ToolboxDelegate.js
@@ -0,0 +1,16 @@
+// Copyright 2014 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+/**
+ * @interface
+ */
+WebInspector.ToolboxDelegate = function() {}
+
+WebInspector.ToolboxDelegate.prototype = {
+    /**
+     * @param {!WebInspector.ResponsiveDesignView} responsiveDesignView
+     * @param {!WebInspector.InspectedPagePlaceholder} placeholder
+     */
+    toolboxLoaded: function(responsiveDesignView, placeholder) {}
+}