[Sync] Refactor sync manager into interface.

sync_manager.h now defines a pure interface. The actual implementation is
in sync_manager_impl.h/cc. In order to support this, we also create a
SyncManagerFactory, which allows us to dependency inject a SyncManager
implementation into the SyncBackendHost. Follow up patches will
make use of this injection, as well as split the SyncManager tests
out of syncapi_unittest.

R=akalin@chromium.org
BUG=133061
TEST=


Review URL: https://chromiumcodereview.appspot.com/10704214

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@147076 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 22 insertions, 0 deletions

diff --git a/sync/internal_api/sync_manager_factory.cc b/sync/internal_api/sync_manager_factory.cc
new file mode 100644
index 0000000..9d784b4
--- /dev/null
+++ b/sync/internal_api/sync_manager_factory.cc
@@ -0,0 +1,22 @@
+// Copyright (c) 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.
+
+#include "sync/internal_api/public/sync_manager_factory.h"
+
+#include "sync/internal_api/sync_manager_impl.h"
+
+namespace syncer {
+
+SyncManagerFactory::SyncManagerFactory() {
+}
+
+SyncManagerFactory::~SyncManagerFactory() {
+}
+
+scoped_ptr<SyncManager> SyncManagerFactory::CreateSyncManager(
+      const std::string name) {
+  return scoped_ptr<SyncManager>(new SyncManagerImpl(name));
+}
+
+}  // namespace syncer