Reland "Revert 156830 - drive: Stop exposing operation_registry() from DriveServiceInterface"

chrome/browser/chromeos/gdata/drive_service_interface.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_DRIVE_SERVICE_INTERFACE_H_
 #define CHROME_BROWSER_CHROMEOS_GDATA_DRIVE_SERVICE_INTERFACE_H_
 
 #include <string>
 
 // TODO(kochi): Further split gdata_operations.h and include only necessary
@@ skipping 27 matching lines @@
   CSV,     // Excel (spreadsheets only).
   ODS,     // Open Document Spreadsheet (spreadsheets only).
   TSV,     // Tab Separated Value (spreadsheets only). Only the first worksheet
            // is returned in TSV by default.
 };
 
 // Observer interface for DriveServiceInterface.
 class DriveServiceObserver {
  public:
   // Triggered when the service gets ready to perform operations.
-  virtual void OnReadyToPerformOperations() = 0;
+  virtual void OnReadyToPerformOperations() {}
+
+  // Called when an operation started, made some progress, or finished.
+  virtual void OnProgressUpdate(const OperationProgressStatusList& list) {}
+
+  // Called when GData authentication failed.
+  virtual void OnAuthenticationFailed() {}
 
  protected:
   virtual ~DriveServiceObserver() {}
 };
 
 // This defines an interface for sharing by DocumentService and
 // MockDocumentService so that we can do testing of clients of DocumentService.
 //
 // All functions must be called on UI thread. DocumentService is built on top
 // of URLFetcher that runs on UI thread.
 //
 // TODO(zel,benchan): Make the terminology/naming convention (e.g. file vs
 // document vs resource, directory vs collection) more consistent and precise.
 class DriveServiceInterface {
  public:
   virtual ~DriveServiceInterface() {}
 
   // Common service:
 
   // Initializes the documents service tied with |profile|.
   virtual void Initialize(Profile* profile) = 0;
 
   // Adds an observer.
   virtual void AddObserver(DriveServiceObserver* observer) = 0;
 
   // Removes an observer.
   virtual void RemoveObserver(DriveServiceObserver* observer) = 0;
 
-  // Retrieves the operation registry.
-  virtual OperationRegistry* operation_registry() const = 0;
-
   // True if ready to start operations.
   virtual bool CanStartOperation() const = 0;
 
   // Cancels all in-flight operations.
   virtual void CancelAll() = 0;
 
+  // Cancels ongoing operation for a given virtual |file_path|. Returns true if
+  // the operation was found and canceled.
+  virtual bool CancelForFilePath(const FilePath& file_path) = 0;
+
+  // Obtains the list of currently active operations.
+  virtual OperationProgressStatusList GetProgressStatusList() const = 0;
+
   // Authentication service:
 
   // Authenticates the user by fetching the auth token as
   // needed. |callback| will be run with the error code and the auth
   // token, on the thread this function is run.
   virtual void Authenticate(const AuthStatusCallback& callback) = 0;
 
   // True if OAuth2 access token is retrieved and believed to be fresh.
   virtual bool HasAccessToken() const = 0;
 
@@ skipping 117 matching lines @@
   // Authorizes a Drive app with the id |app_id| to open the given document.
   // Upon completion, invokes |callback| with results on the calling thread.
   virtual void AuthorizeApp(const GURL& resource_url,
                             const std::string& app_id,
                             const GetDataCallback& callback) = 0;
 };
 
 }  // namespace gdata
 
 #endif  // CHROME_BROWSER_CHROMEOS_GDATA_DRIVE_SERVICE_INTERFACE_H_