Get AboutResource as account metadata for Drive V2.

chrome/browser/chromeos/gdata/gdata_wapi_feed_loader.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_WAPI_FEED_LOADER_H_
 #define CHROME_BROWSER_CHROMEOS_GDATA_GDATA_WAPI_FEED_LOADER_H_
 
 #include "base/callback.h"
 #include "base/file_path.h"
 #include "base/observer_list.h"
 #include "chrome/browser/chromeos/gdata/gdata_errorcode.h"
 #include "chrome/browser/chromeos/gdata/gdata_files.h"
 
 namespace gdata {
 
 class DriveWebAppsRegistryInterface;
 class DocumentsServiceInterface;
 class GDataCache;
 struct GetDocumentsUiState;
 
 // Set of parameters sent to LoadDocumentFeedCallback callback.
 struct GetDocumentsParams {
-  GetDocumentsParams(int start_changestamp,
-                     int root_feed_changestamp,
+  GetDocumentsParams(int64 start_changestamp,
+                     int64 root_feed_changestamp,
                      std::vector<DocumentFeed*>* feed_list,
                      bool should_fetch_multiple_feeds,
                      const FilePath& search_file_path,
                      const std::string& search_query,
                      const std::string& directory_resource_id,
                      const FindEntryCallback& callback,
                      GetDocumentsUiState* ui_state);
   ~GetDocumentsParams();
 
   // Changestamps are positive numbers in increasing order. The difference
   // between two changestamps is proportional equal to number of items in
   // delta feed between them - bigger the difference, more likely bigger
   // number of items in delta feeds.
-  int start_changestamp;
-  int root_feed_changestamp;
+  int64 start_changestamp;
+  int64 root_feed_changestamp;
   scoped_ptr<std::vector<DocumentFeed*> > feed_list;
   // Should we stop after getting first feed chunk, even if there is more
   // data.
   bool should_fetch_multiple_feeds;
   FilePath search_file_path;
   std::string search_query;
   std::string directory_resource_id;
   FindEntryCallback callback;
   scoped_ptr<GetDocumentsUiState> ui_state;
 };
@@ skipping 57 matching lines @@
   // |entry_found_callback| is used only when this is invoked while searching
   // for file info, and is used in |load_feed_callback|. If successful, it will
   // try to find the file upon retrieval completion.
   // |should_fetch_multiple_feeds| is true iff don't want to stop feed loading
   // after we retrieve first feed chunk.
   // If invoked as a part of content search, query will be set in
   // |search_query|.
   // If |feed_to_load| is set, this is feed url that will be used to load feed.
   void LoadFromServer(
       ContentOrigin initial_origin,
-      int start_changestamp,
-      int root_feed_changestamp,
+      int64 start_changestamp,
+      int64 root_feed_changestamp,
       bool should_fetch_multiple_feeds,
       const FilePath& search_file_path,
       const std::string& search_query,
       const GURL& feed_to_load,
       const std::string& directory_resource_id,
       const FindEntryCallback& entry_found_callback,
       const LoadDocumentFeedCallback& feed_load_callback);
 
   // Retrieves account metadata and determines from the last change timestamp
   // if the feed content loading from the server needs to be initiated.
   void ReloadFromServerIfNeeded(
       ContentOrigin initial_origin,
-      int local_changestamp,
+      int64 local_changestamp,
       const FilePath& search_file_path,
       const FindEntryCallback& callback);
 
   // Updates whole directory structure feeds collected in |feed_list|.
   // On success, returns PLATFORM_FILE_OK. Record file statistics as UMA
   // histograms.
   //
   // See comments at GDataWapiFeedProcessor::ApplyFeeds() for
   // |start_changestamp| and |root_feed_changestamp|.
   GDataFileError UpdateFromFeed(
     const std::vector<DocumentFeed*>& feed_list,
-    int start_changestamp,
-    int root_feed_changestamp);
+    int64 start_changestamp,
+    int64 root_feed_changestamp);
 
  private:
   // Callback for handling root directory refresh from the cache.
   void OnProtoLoaded(LoadRootFeedParams* params);
 
   // Continues handling root directory refresh after the directory service
   // is fully loaded.
   void ContinueWithInitializedDirectoryService(LoadRootFeedParams* params,
                                                GDataFileError error);
 
   // Helper callback for handling results of metadata retrieval initiated from
   // ReloadFeedFromServerIfNeeded(). This method makes a decision about fetching
   // the content of the root feed during the root directory refresh process.
   void OnGetAccountMetadata(
       ContentOrigin initial_origin,
-      int local_changestamp,
+      int64 local_changestamp,
       const FilePath& search_file_path,
       const FindEntryCallback& callback,
       GDataErrorCode status,
+      scoped_ptr<base::Value> feed_data);
+
+  // Helper callback for handling results of account data retrieval initiated
+  // from ReloadFeedFromServerIfNeeded() for Drive V2 API.
+  // This method makes a decision about fetching the content of the root feed
+  // during the root directory refresh process.
+  void OnGetAboutResource(
+      ContentOrigin initial_origin,
+      int64 local_changestamp,
+      const FilePath& search_file_path,
+      const FindEntryCallback& callback,
+      GDataErrorCode status,
       scoped_ptr<base::Value> feed_data);
 
   // Callback for handling feed content fetching while searching for file info.
   // This callback is invoked after async feed fetch operation that was
   // invoked by StartDirectoryRefresh() completes. This callback will update
   // the content of the refreshed directory object and continue initially
   // started FindEntryByPath() request.
   void OnFeedFromServerLoaded(GetDocumentsParams* params,
                               GDataFileError error);
 
@@ skipping 23 matching lines @@
 
   // Note: This should remain the last member so it'll be destroyed and
   // invalidate its weak pointers before any other members are destroyed.
   base::WeakPtrFactory<GDataWapiFeedLoader> weak_ptr_factory_;
   DISALLOW_COPY_AND_ASSIGN(GDataWapiFeedLoader);
 };
 
 }  // namespace gdata
 
 #endif  // CHROME_BROWSER_CHROMEOS_GDATA_GDATA_WAPI_FEED_LOADER_H_