Move Requirements out of Extension Class

chrome/common/extensions/manifest_handlers/requirements_handler.h

+// Copyright (c) 2013 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_MANIFEST_HANDLERS_REQUIREMENTS_HANDLER_H_
+#define CHROME_COMMON_EXTENSIONS_MANIFEST_HANDLERS_REQUIREMENTS_HANDLER_H_
+
+#include <string>
+
+#include "base/memory/scoped_ptr.h"
+#include "chrome/common/extensions/extension.h"
+#include "chrome/common/extensions/manifest.h"
+#include "chrome/common/extensions/manifest_handler.h"
+
+namespace extensions {
+
+// Declared requirements for the extension.
+struct RequirementsInfo : public Extension::ManifestData {
+  explicit RequirementsInfo(const Manifest* manifest);
+  virtual ~RequirementsInfo();
+
+  bool webgl;
+  bool css3d;
+  bool npapi;
+
+  static const RequirementsInfo& GetRequirements(const Extension* extension);
+};
+
+// Parses the "requirements" manifest key.
+class RequirementsHandler : public ManifestHandler {
+ public:
+  RequirementsHandler();
+  virtual ~RequirementsHandler();
+
+  virtual bool Parse(Extension* extension, string16* error) OVERRIDE;
+
+  virtual bool AlwaysParseForType(Manifest::Type type) const OVERRIDE;
+
+  virtual const std::vector<std::string> PrerequisiteKeys() const OVERRIDE;
+
+ private:
+  virtual const std::vector<std::string> Keys() const OVERRIDE;
+
+  DISALLOW_COPY_AND_ASSIGN(RequirementsHandler);
+};
+
+}  // namespace extensions
+
+#endif  // CHROME_COMMON_EXTENSIONS_MANIFEST_HANDLERS_REQUIREMENTS_HANDLER_H_