Support GU retry command in sync engine. The command specifies a delay after which syncer should issue a GU to pick up updates missed by last GU.

BUG=

Review URL: https://codereview.chromium.org/124083002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@244381 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 15 insertions, 3 deletions

diff --git a/sync/sessions/nudge_tracker.h b/sync/sessions/nudge_tracker.h
index fcd0150..1663f0c 100644
--- a/sync/sessions/nudge_tracker.h
+++ b/sync/sessions/nudge_tracker.h
@@ -36,11 +36,14 @@ class SYNC_EXPORT_PRIVATE NudgeTracker {
 
   // Returns true if there is a good reason for performing a get updates
   // request as part of the next sync cycle.
-  bool IsGetUpdatesRequired() const;
+  bool IsGetUpdatesRequired(base::TimeTicks now) const;
 
-  // Tells this class that all required update fetching and committing has
+  // Return true if should perform a sync cycle for GU retry.
+  bool IsRetryRequired(base::TimeTicks now) const;
+
+  // Tells this class that all required update fetching or committing has
   // completed successfully.
-  void RecordSuccessfulSyncCycle();
+  void RecordSuccessfulSyncCycle(base::TimeTicks now);
 
   // Takes note of a local change.
   void RecordLocalChange(ModelTypeSet types);
@@ -105,6 +108,10 @@ class SYNC_EXPORT_PRIVATE NudgeTracker {
   // Adjusts the number of hints that can be stored locally.
   void SetHintBufferSize(size_t size);
 
+  void set_next_retry_time(base::TimeTicks next_retry_time) {
+    next_retry_time_ = next_retry_time;
+  }
+
  private:
   typedef std::map<ModelType, DataTypeTracker> TypeTrackerMap;
 
@@ -130,6 +137,11 @@ class SYNC_EXPORT_PRIVATE NudgeTracker {
 
   size_t num_payloads_per_type_;
 
+  base::TimeTicks last_successful_sync_time_;
+
+  // A retry GU should be issued after this time.
+  base::TimeTicks next_retry_time_;
+
   DISALLOW_COPY_AND_ASSIGN(NudgeTracker);
 };