Get rid of RequestRegistry (part 6): get rid of RequestRegistry.

chrome/browser/google_apis/request_registry.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_GOOGLE_APIS_REQUEST_REGISTRY_H_
-#define CHROME_BROWSER_GOOGLE_APIS_REQUEST_REGISTRY_H_
-
-#include "base/basictypes.h"
-#include "base/id_map.h"
-
-namespace google_apis {
-
-// Unique ID to identify each request.
-typedef int32 RequestID;
-
-// This class tracks all the in-flight Google API requests and manage
-// their lifetime.
-class RequestRegistry {
- public:
-  RequestRegistry();
-  ~RequestRegistry();
-
-  // Base class for requests that this registry class can maintain.
-  // NotifyStart() passes the ownership of the Request object to the registry.
-  // In particular, calling NotifyFinish() causes the registry to delete the
-  // Request object itself.
-  class Request {
-   public:
-    explicit Request(RequestRegistry* registry);
-    virtual ~Request();
-
-   protected:
-    // Notifies the registry about current status.
-    void NotifyStart();
-    void NotifyFinish();
-
-   private:
-    RequestRegistry* const registry_;
-    RequestID id_;
-  };
-
- private:
-  // Handlers for notifications from Requests.
-  friend class Request;
-  // Notifies that an request has started. This method passes the ownership of
-  // the request to the registry. A fresh request ID is returned to *id.
-  void OnRequestStart(Request* request, RequestID* id);
-  void OnRequestFinish(RequestID request_id);
-
-  typedef IDMap<Request, IDMapOwnPointer> RequestIDMap;
-  RequestIDMap in_flight_requests_;
-
-  DISALLOW_COPY_AND_ASSIGN(RequestRegistry);
-};
-
-}  // namespace google_apis
-
-#endif  // CHROME_BROWSER_GOOGLE_APIS_REQUEST_REGISTRY_H_