[Sync] Consolidate DataTypeController methods that post on the backend thread

chrome/browser/sync/glue/password_data_type_controller.cc

Index: chrome/browser/sync/glue/password_data_type_controller.cc
diff --git a/chrome/browser/sync/glue/password_data_type_controller.cc b/chrome/browser/sync/glue/password_data_type_controller.cc
index 10985cfa44b8d7640bee17ecff357170099653c9..1e0ee682a07b82bec8024dbef935903fad6f3f85 100644
--- a/chrome/browser/sync/glue/password_data_type_controller.cc
+++ b/chrome/browser/sync/glue/password_data_type_controller.cc
@@ -30,6 +30,15 @@ PasswordDataTypeController::PasswordDataTypeController(
 PasswordDataTypeController::~PasswordDataTypeController() {
 }
 
+bool PasswordDataTypeController::PostTaskOnBackendThread(
+      const tracked_objects::Location& from_here,
+      const base::Closure& task) {
+  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
+  DCHECK(password_store_.get());
+  password_store_->ScheduleTask(task);
+  return true;
+}
+
 bool PasswordDataTypeController::StartModels() {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
   DCHECK_EQ(state(), MODEL_STARTING);
@@ -45,15 +54,6 @@ bool PasswordDataTypeController::StartModels() {
   return true;
 }
 
-bool PasswordDataTypeController::StartAssociationAsync() {
-  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
-  DCHECK_EQ(state(), ASSOCIATING);
-  DCHECK(password_store_.get());
-  password_store_->ScheduleTask(
-      base::Bind(&PasswordDataTypeController::StartAssociation, this));
-  return true;
-}
-
 void PasswordDataTypeController::CreateSyncComponents() {
   DCHECK(!BrowserThread::CurrentlyOn(BrowserThread::UI));
   DCHECK_EQ(state(), ASSOCIATING);
@@ -66,15 +66,6 @@ void PasswordDataTypeController::CreateSyncComponents() {
   set_change_processor(sync_components.change_processor);
 }
 
-bool PasswordDataTypeController::StopAssociationAsync() {
-  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
-  DCHECK_EQ(state(), STOPPING);
-  DCHECK(password_store_.get());
-  password_store_->ScheduleTask(
-      base::Bind(&PasswordDataTypeController::StopAssociation, this));
-  return true;
-}
-
 syncable::ModelType PasswordDataTypeController::type() const {
   return syncable::PASSWORDS;
 }