Add chrome side webusb permission UI code

chrome/browser/ui/website_settings/chooser_bubble_delegate.cc

Index: chrome/browser/ui/website_settings/chooser_bubble_delegate.cc
diff --git a/chrome/browser/ui/website_settings/chooser_bubble_delegate.cc b/chrome/browser/ui/website_settings/chooser_bubble_delegate.cc
new file mode 100644
index 0000000000000000000000000000000000000000..9279d06dd464f01aaae7aeb632721dadda61bf12
--- /dev/null
+++ b/chrome/browser/ui/website_settings/chooser_bubble_delegate.cc
@@ -0,0 +1,13 @@
+// Copyright 2015 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.
+
+#include "chrome/browser/ui/website_settings/chooser_bubble_delegate.h"
+
+ChooserBubbleDelegate::ChooserBubbleDelegate() {}
+
+ChooserBubbleDelegate::~ChooserBubbleDelegate() {}
+
+std::string ChooserBubbleDelegate::GetName() const {
+  return "ChooserBubble";
+}