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

sync/internal_api/sync_manager_impl_unittest.cc

 // Copyright 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // Unit tests for the SyncApi. Note that a lot of the underlying
 // functionality is provided by the Syncable layer, which has its own
 // unit tests. We'll test SyncApi specific things in this harness.
 
 #include <cstddef>
 #include <map>
@@ skipping 933 matching lines @@
     syncable::MutableEntry entry(&trans, syncable::GET_BY_CLIENT_TAG,
                                  hash);
     EXPECT_TRUE(entry.good());
     if (!entry.GetIsUnsynced())
       return false;
     entry.PutIsUnsynced(false);
     return true;
   }
 
   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
   // be called on any thread.
   bool EncryptEverythingEnabledForTest() {
     return sync_manager_.GetEncryptionHandler()->EncryptEverythingEnabled();
   }
 
   // Gets the set of encrypted types from the cryptographer
   // Note: opens a transaction.  May be called from any thread.
@@ skipping 1438 matching lines @@
 
   MOCK_METHOD1(Start, void(SyncScheduler::Mode));
   MOCK_METHOD1(ScheduleConfiguration, void(const ConfigurationParams&));
 };
 
 class ComponentsFactory : public TestInternalComponentsFactory {
  public:
   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() {}
 
   virtual scoped_ptr<SyncScheduler> BuildScheduler(
       const std::string& name,
       sessions::SyncSessionContext* context,
       CancelationSignal* stop_handle) OVERRIDE {
     *session_context_ = context;
     return scheduler_to_use_.Pass();
@@ skipping 746 matching lines @@
 // do so it should fail initialization. This test verifies this behavior.
 // Test reuses SyncManagerImpl initialization from SyncManagerTest but overrides
 // InternalComponentsFactory to return DirectoryBackingStore that always fails
 // to load.
 class SyncManagerInitInvalidStorageTest : public SyncManagerTest {
  public:
   SyncManagerInitInvalidStorageTest() {
   }
 
   virtual InternalComponentsFactory* GetFactory() OVERRIDE {
-    return new TestInternalComponentsFactory(GetSwitches(), STORAGE_INVALID);
+    return new TestInternalComponentsFactory(
+        GetSwitches(), InternalComponentsFactory::STORAGE_INVALID,
+        InternalComponentsFactory::STORAGE_ON_DISK);
   }
 };
 
 // SyncManagerInitInvalidStorageTest::GetFactory will return
 // DirectoryBackingStore that ensures that SyncManagerImpl::OpenDirectory fails.
 // SyncManagerImpl initialization is done in SyncManagerTest::SetUp. This test's
 // task is to ensure that SyncManagerImpl reported initialization failure in
 // OnInitializationComplete callback.
 TEST_F(SyncManagerInitInvalidStorageTest, FailToOpenDatabase) {
   EXPECT_FALSE(initialization_succeeded_);
 }
 
 }  // namespace syncer