Introduce DeclarativeUserScriptManager.

chrome/browser/extensions/declarative_user_script_manager.h

+// 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.
+
+#ifndef CHROME_BROWSER_EXTENSIONS_DECLARATIVE_USER_SCRIPT_MANAGER_H_
+#define CHROME_BROWSER_EXTENSIONS_DECLARATIVE_USER_SCRIPT_MANAGER_H_
+
+#include "base/macros.h"
+#include "base/memory/scoped_vector.h"
+#include "extensions/common/extension.h"
+
+class Profile;
+
+namespace extensions {
+
+class DeclarativeUserScriptMaster;
+
+class DeclarativeUserScriptManager {
+ public:
+  explicit DeclarativeUserScriptManager(Profile* profile);
+  ~DeclarativeUserScriptManager();
+
+  // Get the user script master for declarative scripts, if any.
+  DeclarativeUserScriptMaster* GetDeclarativeUserScriptMasterByID(
+      const ExtensionId& extension_id);
+ private:
+  Profile* profile_;
+
+  // Shared memory region manager for programmatically declared scripts.
+  // Managers are instantiated the first time the declarative
+  // API is used by an extension to request content scripts.
+  ScopedVector<DeclarativeUserScriptMaster> declarative_user_script_masters_;
+
+  DISALLOW_COPY_AND_ASSIGN(DeclarativeUserScriptManager);
+};
+
+}  // extensions
+
+#endif  // CHROME_BROWSER_EXTENSIONS_DECLARATIVE_USER_SCRIPT_MANAGER_H_