Remove "GData" prefix from non-GData specific classes

chrome/browser/chromeos/gdata/gdata_operation_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_CHROMEOS_GDATA_GDATA_OPERATION_REGISTRY_H_
-#define CHROME_BROWSER_CHROMEOS_GDATA_GDATA_OPERATION_REGISTRY_H_
-
-#include <string>
-#include <vector>
-
-#include "base/basictypes.h"
-#include "base/file_path.h"
-#include "base/id_map.h"
-#include "base/observer_list.h"
-#include "base/time.h"
-
-namespace gdata {
-
-// This class tracks all the in-flight GData operation objects and manage their
-// lifetime.
-class GDataOperationRegistry {
- public:
-  GDataOperationRegistry();
-  ~GDataOperationRegistry();
-
-  // Unique ID to identify each operation.
-  typedef int32 OperationID;
-
-  // Enumeration type for indicating the direction of the operation.
-  enum OperationType {
-    OPERATION_UPLOAD,
-    OPERATION_DOWNLOAD,
-    OPERATION_OTHER,
-  };
-
-  enum OperationTransferState {
-    OPERATION_NOT_STARTED,
-    OPERATION_STARTED,
-    OPERATION_IN_PROGRESS,
-    OPERATION_COMPLETED,
-    OPERATION_FAILED,
-    OPERATION_SUSPENDED,
-  };
-
-  // Returns string representations of the operation type and state, which are
-  // exposed to the private extension API as in:
-  // operation.chrome/common/extensions/api/file_browser_private.json
-  static std::string OperationTypeToString(OperationType type);
-  static std::string OperationTransferStateToString(
-      OperationTransferState state);
-
-  // Structure that packs progress information of each operation.
-  struct ProgressStatus {
-    ProgressStatus(OperationType type, const FilePath& file_path);
-    // For debugging
-    std::string DebugString() const;
-
-    OperationID operation_id;
-
-    // Type of the operation: upload/download.
-    OperationType operation_type;
-    // GData path of the file dealt with the current operation.
-    FilePath file_path;
-    // Current state of the transfer;
-    OperationTransferState transfer_state;
-    // The time when the operation is initiated.
-    base::Time start_time;
-    // Current fraction of progress of the operation.
-    int64 progress_current;
-    // Expected total number of bytes to be transferred in the operation.
-    // -1 if no expectation is available (yet).
-    int64 progress_total;
-  };
-  typedef std::vector<ProgressStatus> ProgressStatusList;
-
-  // Observer interface for listening changes in the active set of operations.
-  class Observer {
-   public:
-    // Called when a GData operation started, made some progress, or finished.
-    virtual void OnProgressUpdate(const ProgressStatusList& list) = 0;
-    // Called when GData authentication failed.
-    virtual void OnAuthenticationFailed() {}
-   protected:
-    virtual ~Observer() {}
-  };
-
-  // Base class for operations that this registry class can maintain.
-  // NotifyStart() passes the ownership of the Operation object to the registry.
-  // In particular, calling NotifyFinish() causes the registry to delete the
-  // Operation object itself.
-  class Operation {
-   public:
-    explicit Operation(GDataOperationRegistry* registry);
-    Operation(GDataOperationRegistry* registry,
-              OperationType type,
-              const FilePath& file_path);
-    virtual ~Operation();
-
-    // Cancels the ongoing operation. NotifyFinish() is called and the Operation
-    // object is deleted once the cancellation is done in DoCancel().
-    void Cancel();
-
-    // Retrieves the current progress status of the operation.
-    const ProgressStatus& progress_status() const { return progress_status_; }
-
-   protected:
-    // Notifies the registry about current status.
-    void NotifyStart();
-    void NotifyProgress(int64 current, int64 total);
-    void NotifyFinish(OperationTransferState status);
-    // Notifies suspend/resume, used for chunked upload operations.
-    // The initial upload operation should issue "start" "progress"* "suspend".
-    // The subsequent operations will call "resume" "progress"* "suspend",
-    // and the last one will do "resume" "progress"* "finish".
-    // In other words, "suspend" is similar to "finish" except it lasts to live
-    // until the next "resume" comes. "Resume" is similar to "start", except
-    // that it removes the existing "suspend" operation.
-    void NotifySuspend();
-    void NotifyResume();
-    // Notifies that authentication has failed.
-    void NotifyAuthFailed();
-
-   private:
-    // Does the cancellation.
-    virtual void DoCancel() = 0;
-
-    GDataOperationRegistry* const registry_;
-    ProgressStatus progress_status_;
-  };
-
-  // Cancels all in-flight operations.
-  void CancelAll();
-
-  // Cancels ongoing operation for a given virtual |file_path|. Returns true if
-  // the operation was found and canceled.
-  bool CancelForFilePath(const FilePath& file_path);
-
-  // Obtains the list of currently active operations.
-  ProgressStatusList GetProgressStatusList();
-
-  // Sets an observer. The registry do NOT own observers; before destruction
-  // they need to be removed from the registry.
-  void AddObserver(Observer* observer);
-  void RemoveObserver(Observer* observer);
-
-  // Disables the notification suppression for testing purpose.
-  void DisableNotificationFrequencyControlForTest();
-
- private:
-  // Handlers for notifications from Operations.
-  friend class Operation;
-  // Notifies that an operation has started. This method passes the ownership of
-  // the operation to the registry. A fresh operation ID is returned to *id.
-  void OnOperationStart(Operation* operation, OperationID* id);
-  void OnOperationProgress(OperationID operation);
-  void OnOperationFinish(OperationID operation);
-  void OnOperationSuspend(OperationID operation);
-  void OnOperationResume(Operation* operation, ProgressStatus* new_status);
-  void OnOperationAuthFailed();
-
-  bool IsFileTransferOperation(const Operation* operation) const;
-
-  // Controls the frequency of notifications, not to flood the listeners with
-  // too many events.
-  bool ShouldNotifyStatusNow(const ProgressStatusList& list);
-  // Sends notifications to the observers after checking that the frequency is
-  // not too high by ShouldNotifyStatusNow.
-  void NotifyStatusToObservers();
-
-  typedef IDMap<Operation, IDMapOwnPointer> OperationIDMap;
-  OperationIDMap in_flight_operations_;
-  ObserverList<Observer> observer_list_;
-  base::Time last_notification_;
-  bool do_notification_frequency_control_;
-
-  DISALLOW_COPY_AND_ASSIGN(GDataOperationRegistry);
-};
-
-}  // namespace gdata
-
-#endif  // CHROME_BROWSER_CHROMEOS_GDATA_GDATA_OPERATION_REGISTRY_H_