[Sync] Make BackendMigrator not wait for full sync cycles

chrome/test/live_sync/live_sync_test.cc

Index: chrome/test/live_sync/live_sync_test.cc
diff --git a/chrome/test/live_sync/live_sync_test.cc b/chrome/test/live_sync/live_sync_test.cc
index 52e1311e87b12de76a743f35685e2a82655b808e..8a48223a4ea615511a7a3b62775ec5355687ee03 100644
--- a/chrome/test/live_sync/live_sync_test.cc
+++ b/chrome/test/live_sync/live_sync_test.cc
@@ -527,7 +527,7 @@ bool LiveSyncTest::AwaitQuiescence() {
   return ProfileSyncServiceHarness::AwaitQuiescence(clients());
 }
 
-bool LiveSyncTest::ServerSupportsNotificationControl() {
+bool LiveSyncTest::ServerSupportsNotificationControl() const {
   EXPECT_NE(SERVER_TYPE_UNDECIDED, server_type_);
 
   // Supported only if we're using the python testserver.
@@ -542,6 +542,14 @@ void LiveSyncTest::DisableNotifications() {
             UTF16ToASCII(browser()->GetSelectedTabContents()->GetTitle()));
 }
 
+void LiveSyncTest::EnableNotifications() {
+  ASSERT_TRUE(ServerSupportsNotificationControl());
+  std::string path = "chromiumsync/enablenotifications";
+  ui_test_utils::NavigateToURL(browser(), sync_server_.GetURL(path));
+  ASSERT_EQ("Notifications enabled",
+            UTF16ToASCII(browser()->GetSelectedTabContents()->GetTitle()));
+}
+
 void LiveSyncTest::TriggerNotification(
     const syncable::ModelTypeSet& changed_types) {
   ASSERT_TRUE(ServerSupportsNotificationControl());
@@ -557,7 +565,7 @@ void LiveSyncTest::TriggerNotification(
             UTF16ToASCII(browser()->GetSelectedTabContents()->GetTitle()));
 }
 
-bool LiveSyncTest::ServerSupportsErrorTriggering() {
+bool LiveSyncTest::ServerSupportsErrorTriggering() const {
   EXPECT_NE(SERVER_TYPE_UNDECIDED, server_type_);
 
   // Supported only if we're using the python testserver.