Revert 110384 - Revert 110356 - Sync: Improve handling of database load failures

chrome/browser/sync/glue/sync_backend_host.cc

Index: chrome/browser/sync/glue/sync_backend_host.cc
===================================================================
--- chrome/browser/sync/glue/sync_backend_host.cc	(revision 110386)
+++ chrome/browser/sync/glue/sync_backend_host.cc	(working copy)
@@ -420,8 +420,11 @@
       base::Bind(&Core::HandleInitializationCompletedOnFrontendLoop, this,
                  js_backend, success));
 
-  // Initialization is complete, so we can schedule recurring SaveChanges.
-  sync_loop_->PostTask(FROM_HERE, base::Bind(&Core::StartSavingChanges, this));
+  if (success) {
+    // Initialization is complete, so we can schedule recurring SaveChanges.
+    sync_loop_->PostTask(FROM_HERE,
+                         base::Bind(&Core::StartSavingChanges, this));
+  }
 }
 
 void SyncBackendHost::Core::OnAuthError(const AuthError& auth_error) {
@@ -608,7 +611,7 @@
       host_->sync_notifier_factory_.CreateSyncNotifier(),
       options.restored_key_for_bootstrapping,
       options.setup_for_test_mode);
-  DCHECK(success) << "Syncapi initialization failed!";
+  LOG_IF(ERROR, !success) << "Syncapi initialization failed!";
 }
 
 void SyncBackendHost::Core::DoCheckServerReachable() {