sync: use progress markers instead of timestamps during GetUpdates

chrome/browser/sync/sessions/status_controller.h

 // Copyright (c) 2009 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.
 
 // StatusController handles all counter and status related number crunching and
 // state tracking on behalf of a SyncSession.  It 'controls' the model data
 // defined in session_state.h.  The most important feature of StatusController
 // is the ScopedModelSafetyRestriction. When one of these is active, the
 // underlying data set exposed via accessors is swapped out to the appropriate
 // set for the restricted ModelSafeGroup behind the scenes.  For example, if
@@ skipping 69 matching lines @@
   }
   ClientToServerMessage* mutable_commit_message() {
     return &shared_.commit_message;
   }
   const ClientToServerResponse& commit_response() const {
     return shared_.commit_response;
   }
   ClientToServerResponse* mutable_commit_response() {
     return &shared_.commit_response;
   }
-  const syncable::MultiTypeTimeStamp& updates_request_parameters() const {
-    return shared_.updates_request_parameters;
+  const syncable::ModelTypeBitSet& updates_request_types() const {
+    return shared_.updates_request_types;
   }
-  void set_updates_request_parameters(
-      const syncable::MultiTypeTimeStamp& value) {
-    shared_.updates_request_parameters = value;
+  void set_updates_request_types(const syncable::ModelTypeBitSet& value) {
+    shared_.updates_request_types = value;
   }
   const ClientToServerResponse& updates_response() const {
     return shared_.updates_response;
   }
   ClientToServerResponse* mutable_updates_response() {
     return &shared_.updates_response;
   }
 
   // Errors and SyncerStatus.
   const ErrorCounters& error_counters() const {
     return shared_.error_counters.value();
   }
   const SyncerStatus& syncer_status() const {
     return shared_.syncer_status.value();
   }
 
   // Changelog related state.
   int64 num_server_changes_remaining() const {
     return shared_.num_server_changes_remaining.value();
   }
-  // Aggregate max over all data type timestamps, used for UI reporting.
-  int64 ComputeMaxLocalTimestamp() const;
 
   // Commit path data.
   const std::vector<syncable::Id>& commit_ids() const {
     DCHECK(!group_restriction_in_effect_) << "Group restriction in effect!";
     return shared_.commit_set.GetAllCommitIds();
   }
   const OrderedCommitSet::Projection& commit_id_projection() {
     DCHECK(group_restriction_in_effect_)
         << "No group restriction for projection.";
     return shared_.commit_set.GetCommitIdProjection(group_restriction_);
@@ skipping 71 matching lines @@
   }
 
   // A toolbelt full of methods for updating counters and flags.
   void increment_num_conflicting_commits_by(int value);
   void reset_num_conflicting_commits();
   void set_num_consecutive_transient_error_commits(int value);
   void increment_num_consecutive_transient_error_commits_by(int value);
   void set_num_consecutive_errors(int value);
   void increment_num_consecutive_errors();
   void increment_num_consecutive_errors_by(int value);
-  void set_current_download_timestamp(syncable::ModelType model,
-                                      int64 current_timestamp);
   void set_num_server_changes_remaining(int64 changes_remaining);
   void set_invalid_store(bool invalid_store);
   void set_syncer_stuck(bool syncer_stuck);
   void set_syncing(bool syncing);
   void set_num_successful_bookmark_commits(int value);
   void increment_num_successful_commits();
   void increment_num_successful_bookmark_commits();
+  void increment_num_updates_downloaded_by(int value);
+  void increment_num_tombstone_updates_downloaded_by(int value);
   void set_unsynced_handles(const std::vector<int64>& unsynced_handles);
 
   void set_commit_set(const OrderedCommitSet& commit_set);
   void update_conflict_sets_built(bool built);
   void update_conflicts_resolved(bool resolved);
   void reset_conflicts_resolved();
   void set_items_committed();
 
  private:
   friend class ScopedModelSafeGroupRestriction;
@@ skipping 49 matching lines @@
   }
  private:
   StatusController* status_;
   DISALLOW_COPY_AND_ASSIGN(ScopedModelSafeGroupRestriction);
 };
 
 }
 }
 
 #endif  // CHROME_BROWSER_SYNC_SESSIONS_STATUS_CONTROLLER_H_