sync: use progress markers instead of timestamps during GetUpdates

chrome/browser/sync/sessions/status_controller.h

Index: chrome/browser/sync/sessions/status_controller.h
diff --git a/chrome/browser/sync/sessions/status_controller.h b/chrome/browser/sync/sessions/status_controller.h
index 7663e4e87f95c22fe4d810f7fc7135557cd610df..5737dff9a77b830daf7dac0e2e76c70179b08a58 100644
--- a/chrome/browser/sync/sessions/status_controller.h
+++ b/chrome/browser/sync/sessions/status_controller.h
@@ -87,12 +87,11 @@ class StatusController {
   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;
@@ -113,8 +112,6 @@ class StatusController {
   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 {
@@ -206,8 +203,6 @@ class StatusController {
   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);
@@ -215,6 +210,8 @@ class StatusController {
   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);