[fsp] Add support for aborting running operations.

chrome/browser/chromeos/file_system_provider/request_manager.h

 // Copyright 2014 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_FILE_SYSTEM_PROVIDER_REQUEST_MANAGER_H_
 #define CHROME_BROWSER_CHROMEOS_FILE_SYSTEM_PROVIDER_REQUEST_MANAGER_H_
 
 #include <map>
 #include <string>
+#include <vector>
 
 #include "base/callback.h"
 #include "base/files/file.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
 #include "base/observer_list.h"
 #include "base/time/time.h"
 #include "base/timer/timer.h"
 #include "chrome/browser/chromeos/file_system_provider/notification_manager_interface.h"
 #include "chrome/browser/chromeos/file_system_provider/provided_file_system_info.h"
@@ skipping 10 matching lines @@
   OPEN_FILE,
   CLOSE_FILE,
   READ_FILE,
   CREATE_DIRECTORY,
   DELETE_ENTRY,
   CREATE_FILE,
   COPY_ENTRY,
   MOVE_ENTRY,
   TRUNCATE,
   WRITE_FILE,
+  ABORT,
   TESTING
 };
 
 // Converts a request type to human-readable format.
 std::string RequestTypeToString(RequestType type);
 
 // Manages requests between the service, async utils and the providing
 // extensions.
 class RequestManager {
  public:
@@ skipping 68 matching lines @@
   // Handles error response for the |request_id|. If handling the error fails,
   // returns false. Always disposes the request. |response| must not be NULL.
   bool RejectRequest(int request_id,
                      scoped_ptr<RequestValue> response,
                      base::File::Error error);
 
   // Sets a custom timeout for tests. The new timeout value will be applied to
   // new requests
   void SetTimeoutForTesting(const base::TimeDelta& timeout);
 
-  // Gets number of active requests for logging purposes.
-  // TODO(mtomasz): Introduce a logger class to gather more information
-  size_t GetActiveRequestsForLogging() const;
+  // Gets list of active request ids.
+  std::vector<int> GetActiveRequestIds() const;
 
   // Adds and removes observers.
   void AddObserver(Observer* observer);
   void RemoveObserver(Observer* observer);
 
  private:
   struct Request {
     Request();
     ~Request();
 
@@ skipping 31 matching lines @@
   base::WeakPtrFactory<RequestManager> weak_ptr_factory_;
   ObserverList<Observer> observers_;
 
   DISALLOW_COPY_AND_ASSIGN(RequestManager);
 };
 
 }  // namespace file_system_provider
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_FILE_SYSTEM_PROVIDER_REQUEST_MANAGER_H_