Let SyncBackupManager keep backup data in memory until shutdown. Only persist

sync/internal_api/sync_manager_impl_unittest.cc

Index: sync/internal_api/sync_manager_impl_unittest.cc
diff --git a/sync/internal_api/sync_manager_impl_unittest.cc b/sync/internal_api/sync_manager_impl_unittest.cc
index 148a8ede0609a6c25c3dfd52805f5b99e34d6790..0051898e665078d318e8c7f990b29329dd1ea65c 100644
--- a/sync/internal_api/sync_manager_impl_unittest.cc
+++ b/sync/internal_api/sync_manager_impl_unittest.cc
@@ -955,7 +955,9 @@ class SyncManagerTest : public testing::Test,
   }
 
   virtual InternalComponentsFactory* GetFactory() {
-    return new TestInternalComponentsFactory(GetSwitches(), STORAGE_IN_MEMORY);
+    return new TestInternalComponentsFactory(
+        GetSwitches(), InternalComponentsFactory::STORAGE_IN_MEMORY,
+        InternalComponentsFactory::STORAGE_ON_DISK);
   }
 
   // Returns true if we are currently encrypting all sync data.  May
@@ -2414,7 +2416,9 @@ class ComponentsFactory : public TestInternalComponentsFactory {
   ComponentsFactory(const Switches& switches,
                     SyncScheduler* scheduler_to_use,
                     sessions::SyncSessionContext** session_context)
-      : TestInternalComponentsFactory(switches, syncer::STORAGE_IN_MEMORY),
+      : TestInternalComponentsFactory(
+          switches, InternalComponentsFactory::STORAGE_IN_MEMORY,
+          InternalComponentsFactory::STORAGE_ON_DISK),
         scheduler_to_use_(scheduler_to_use),
         session_context_(session_context) {}
   virtual ~ComponentsFactory() {}
@@ -3181,7 +3185,9 @@ class SyncManagerInitInvalidStorageTest : public SyncManagerTest {
   }
 
   virtual InternalComponentsFactory* GetFactory() OVERRIDE {
-    return new TestInternalComponentsFactory(GetSwitches(), STORAGE_INVALID);
+    return new TestInternalComponentsFactory(
+        GetSwitches(), InternalComponentsFactory::STORAGE_INVALID,
+        InternalComponentsFactory::STORAGE_ON_DISK);
   }
 };