Create signin component and componentize TokenWebData.

components/signin.gypi

Index: components/signin.gypi
diff --git a/components/signin.gypi b/components/signin.gypi
new file mode 100644
index 0000000000000000000000000000000000000000..0208a97d652f3adaebdda930f0af6648506349d5
--- /dev/null
+++ b/components/signin.gypi
@@ -0,0 +1,27 @@
+# Copyright 2014 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.
+
+{
+  'targets': [
+    {
+      'target_name': 'signin_core',
+      'type': 'static_library',
+      'dependencies': [
+        'encryptor',
+        'webdata_common',
+        '../base/base.gyp:base',
+        '../sql/sql.gyp:sql',
+      ],
+      'include_dirs': [
+        '..',
+      ],
+      'sources': [
+        'signin/core/webdata/token_service_table.cc',
+        'signin/core/webdata/token_service_table.h',
+        'signin/core/webdata/token_web_data.cc',
+        'signin/core/webdata/token_web_data.h',
+      ],
+    },
+  ],
+}