Move ChromeRequirementsChecker to //extensions as a PreloadCheck

chrome/common/extensions/api/plugins/plugins_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_API_PLUGINS_PLUGINS_HANDLER_H_
-#define CHROME_COMMON_EXTENSIONS_API_PLUGINS_PLUGINS_HANDLER_H_
-
-#include <memory>
-#include <string>
-
-#include "base/macros.h"
-#include "extensions/common/extension.h"
-#include "extensions/common/manifest_handler.h"
-
-namespace extensions {
-
-// An NPAPI plugin included in the extension.
-struct PluginInfo {
-  typedef std::vector<PluginInfo> PluginVector;
-
-  PluginInfo(const base::FilePath& plugin_path, bool plugin_is_public);
-  ~PluginInfo();
-
-  base::FilePath path;  // Path to the plugin.
-  bool is_public;  // False if only this extension can load this plugin.
-
-  // Return the plugins for a given |extensions|, or NULL if none exist.
-  static const PluginVector* GetPlugins(const Extension* extension);
-
-  // Return true if the given |extension| has plugins, and false otherwise.
-  static bool HasPlugins(const Extension* extension);
-};
-
-// Parses the "plugins" manifest key.
-class PluginsHandler : public ManifestHandler {
- public:
-  PluginsHandler();
-  ~PluginsHandler() override;
-
-  bool Parse(Extension* extension, base::string16* error) override;
-  bool Validate(const Extension* extension,
-                std::string* error,
-                std::vector<InstallWarning>* warnings) const override;
-
- private:
-  const std::vector<std::string> Keys() const override;
-
-  DISALLOW_COPY_AND_ASSIGN(PluginsHandler);
-};
-
-}  // namespace extensions
-
-#endif  // CHROME_COMMON_EXTENSIONS_API_PLUGINS_PLUGINS_HANDLER_H_