Refactor APIResourceController to ProfileKeyedService.

chrome/browser/extensions/api/api_resource_controller.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_BROWSER_EXTENSIONS_API_API_RESOURCE_CONTROLLER_H_
-#define CHROME_BROWSER_EXTENSIONS_API_API_RESOURCE_CONTROLLER_H_
-
-#include <string>
-#include <map>
-
-#include "base/memory/linked_ptr.h"
-#include "chrome/browser/extensions/api/api_resource.h"
-
-namespace extensions {
-
-class SerialConnection;
-class Socket;
-class UsbDeviceResource;
-
-// kSrcIdKey, or "srcId," binds an APIResource to the onEvent closure that was
-// optionally passed to the APIResource's create() method. We generated it in
-// schema_generated_bindings.js; the application code is unaware of it.
-extern const char kSrcIdKey[];
-
-// APIController keeps track of a collection of APIResources and provides a
-// convenient set of methods to work with them.
-class APIResourceController {
- public:
-  APIResourceController();
-  virtual ~APIResourceController();
-
-  // Takes ownership of api_resource.
-  int AddAPIResource(APIResource* api_resource);
-
-  // APIResourceController knows about all classes derived from APIResource.
-  // This is intentional to avoid scattering potentially unsafe static_cast<>
-  // operations throughout the codebase.
-  //
-  // Another alternative we considered and rejected was templatizing
-  // APIResourceController and scattering specialized versions throughout the
-  // codebase.
-
-  bool RemoveSocket(int api_resource_id);
-  bool RemoveSerialConnection(int api_resource_id);
-  bool RemoveUsbDeviceResource(int api_resource_id);
-
-  Socket* GetSocket(int api_resource_id) const;
-  SerialConnection* GetSerialConnection(int api_resource_id) const;
-  UsbDeviceResource* GetUsbDeviceResource(int api_resource_id) const;
-
- private:
-  typedef std::map<int, linked_ptr<APIResource> > APIResourceMap;
-
-  APIResource* GetAPIResource(APIResource::APIResourceType api_resource_type,
-                              int api_resource_id) const;
-  bool RemoveAPIResource(APIResource::APIResourceType api_resource_type,
-    int api_resource_id);
-
-  int GenerateAPIResourceId();
-
-  APIResourceMap* GetResourceMapForType(
-    APIResource::APIResourceType api_resource_type) const;
-
-  int next_api_resource_id_;
-
-  // We need finer-grained control over the lifetime of these instances
-  // than RAII can give us.
-  APIResourceMap* socket_resource_map_;
-  APIResourceMap* serial_connection_resource_map_;
-  APIResourceMap* usb_device_resource_map_;
-
-  DISALLOW_COPY_AND_ASSIGN(APIResourceController);
-};
-
-}  // namespace extensions
-
-#endif  // CHROME_BROWSER_EXTENSIONS_API_API_RESOURCE_CONTROLLER_H_