[sync] Componentize sync: Part Final: Target 'sync' is now its own component

sync/sync_api.gypi

Index: sync/sync_api.gypi
diff --git a/sync/sync_api.gypi b/sync/sync_api.gypi
new file mode 100644
index 0000000000000000000000000000000000000000..188fc3242241ffbb6515f2319e5e3aa07ddda54f
--- /dev/null
+++ b/sync/sync_api.gypi
@@ -0,0 +1,33 @@
+# Copyright 2013 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_dirs': [
+    '..',
+  ],
+  'defines': [
+    'SYNC_IMPLEMENTATION',
+  ],
+  'dependencies': [
+    '../base/base.gyp:base',
+  ],
+  'sources': [
+    'api/string_ordinal.h',
+    'api/syncable_service.cc',
+    'api/syncable_service.h',
+    'api/sync_data.h',
+    'api/sync_data.cc',
+    'api/sync_change.h',
+    'api/sync_change.cc',
+    'api/sync_change_processor.h',
+    'api/sync_change_processor.cc',
+    'api/sync_error.h',
+    'api/sync_error.cc',
+    'api/sync_error_factory.h',
+    'api/sync_error_factory.cc',
+    'api/sync_merge_result.h',
+    'api/sync_merge_result.cc',
+    'api/time.h',
+  ],
+}