Parse the script_badge manifest section.

chrome/common/extensions/extension_action.h

 // 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_COMMON_EXTENSIONS_EXTENSION_ACTION_H_
 #define CHROME_COMMON_EXTENSIONS_EXTENSION_ACTION_H_
 #pragma once
 
 #include <map>
 #include <string>
 #include <vector>
 
 #include "base/basictypes.h"
 #include "third_party/skia/include/core/SkColor.h"
 
 namespace gfx {
 class Canvas;
 class Rect;
 }
 
 class GURL;
 class SkBitmap;
 
-// ExtensionAction encapsulates the state of a browser or page action.
+// ExtensionAction encapsulates the state of a browser action, page action, or
+// script badge.
 // Instances can have both global and per-tab state. If a property does not have
 // a per-tab value, the global value is used instead.
 class ExtensionAction {
  public:
   // Use this ID to indicate the default state for properties that take a tab_id
   // parameter.
   static const int kDefaultTabId;
 
   // The types of extension actions.
   enum Type {
     TYPE_NONE,
     TYPE_BROWSER,
     TYPE_PAGE,
+    TYPE_SCRIPT_BADGE,
   };
 
   explicit ExtensionAction(const std::string& extension_id);
   ~ExtensionAction();
 
   // extension id
   const std::string& extension_id() const { return extension_id_; }
 
   // action id -- only used with legacy page actions API
   std::string id() const { return id_; }
@@ skipping 149 matching lines @@
 };
 
 template<>
 struct ExtensionAction::ValueTraits<int> {
   static int CreateEmpty() {
     return -1;
   }
 };
 
 #endif  // CHROME_COMMON_EXTENSIONS_EXTENSION_ACTION_H_