Refactor UI "badge" (page action) logic into a BadgeController interface.

chrome/browser/extensions/badge_decoration.h

Index: chrome/browser/extensions/badge_decoration.h
diff --git a/chrome/browser/extensions/badge_decoration.h b/chrome/browser/extensions/badge_decoration.h
new file mode 100644
index 0000000000000000000000000000000000000000..a2eaa23e40c67d0492631c1dbf9adef10e8ad132
--- /dev/null
+++ b/chrome/browser/extensions/badge_decoration.h
@@ -0,0 +1,19 @@
+// Copyright (c) 2012 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.
+
+#ifndef CHROME_BROWSER_EXTENSIONS_BADGE_DECORATION_H_
+#define CHROME_BROWSER_EXTENSIONS_BADGE_DECORATION_H_
+#pragma once
+
+namespace extensions {
+namespace badge_decoration {
+
+enum Decoration {
+  NONE,
+};
+
+}  // namespace badge_decoration
+}  // namespace extensions
+
+#endif  // CHROME_BROWSER_EXTENSIONS_BADGE_DECORATION_H_