[Sync] Make syncer commands avoid posting tasks on threads with no work to do

chrome/browser/sync/sessions/status_controller.cc

Index: chrome/browser/sync/sessions/status_controller.cc
diff --git a/chrome/browser/sync/sessions/status_controller.cc b/chrome/browser/sync/sessions/status_controller.cc
index 26f5c62055d820a0555dee1cb8bd929ac58d9371..4b82aa827d67d10592d186f328aa611663d0a3f2 100644
--- a/chrome/browser/sync/sessions/status_controller.cc
+++ b/chrome/browser/sync/sessions/status_controller.cc
@@ -62,6 +62,12 @@ const ConflictProgress* StatusController::GetUnrestrictedConflictProgress(
   return state ? &state->conflict_progress : NULL;
 }
 
+ConflictProgress*
+    StatusController::GetUnrestrictedMutableConflictProgressForTest(
+        ModelSafeGroup group) {
+  return &GetOrCreateModelSafeGroupState(false, group)->conflict_progress;
+}
+
 const UpdateProgress* StatusController::GetUnrestrictedUpdateProgress(
     ModelSafeGroup group) const {
   const PerModelSafeGroupState* state =
@@ -69,6 +75,12 @@ const UpdateProgress* StatusController::GetUnrestrictedUpdateProgress(
   return state ? &state->update_progress : NULL;
 }
 
+UpdateProgress*
+    StatusController::GetUnrestrictedMutableUpdateProgressForTest(
+        ModelSafeGroup group) {
+  return &GetOrCreateModelSafeGroupState(false, group)->update_progress;
+}
+
 const PerModelSafeGroupState* StatusController::GetModelSafeGroupState(
     bool restrict, ModelSafeGroup group) const {
   DCHECK_EQ(restrict, group_restriction_in_effect_);