arc: Create sync protos for Arc package.

sync/tools/testserver/chromiumsync.py

Index: sync/tools/testserver/chromiumsync.py
diff --git a/sync/tools/testserver/chromiumsync.py b/sync/tools/testserver/chromiumsync.py
index c07f84bd2e606e3d4916606bcf23c7bd7bd41ce8..fbdc44b628eb6ee1d349dc9620589a7e08ecf435 100644
--- a/sync/tools/testserver/chromiumsync.py
+++ b/sync/tools/testserver/chromiumsync.py
@@ -27,6 +27,7 @@ import app_list_specifics_pb2
 import app_notification_specifics_pb2
 import app_setting_specifics_pb2
 import app_specifics_pb2
+import arc_package_specifics_pb2
 import article_specifics_pb2
 import autofill_specifics_pb2
 import bookmark_specifics_pb2
@@ -66,6 +67,7 @@ ALL_TYPES = (
     APP_LIST,
     APP_NOTIFICATION,
     APP_SETTINGS,
+    ARC_PACKAGE,
     ARTICLE,
     AUTOFILL,
     AUTOFILL_PROFILE,
@@ -94,7 +96,7 @@ ALL_TYPES = (
     EXTENSION_SETTINGS,
     FAVICON_IMAGES,
     FAVICON_TRACKING,
-    WIFI_CREDENTIAL) = range(34)
+    WIFI_CREDENTIAL) = range(35)
 
 # An enumeration on the frequency at which the server should send errors
 # to the client. This would be specified by the url that triggers the error.
@@ -115,6 +117,7 @@ SYNC_TYPE_TO_DESCRIPTOR = {
     APP_NOTIFICATION: SYNC_TYPE_FIELDS['app_notification'],
     APP_SETTINGS: SYNC_TYPE_FIELDS['app_setting'],
     APPS: SYNC_TYPE_FIELDS['app'],
+    ARC_PACKAGE: SYNC_TYPE_FIELDS['arc_package'],
     ARTICLE: SYNC_TYPE_FIELDS['article'],
     AUTOFILL: SYNC_TYPE_FIELDS['autofill'],
     AUTOFILL_PROFILE: SYNC_TYPE_FIELDS['autofill_profile'],
@@ -502,6 +505,8 @@ class SyncDataModel(object):
       PermanentItem('google_chrome_app_settings',
                     name='App Settings',
                     parent_tag=ROOT_ID, sync_type=APP_SETTINGS),
+      PermanentItem('google_chrome_arc_package', name='Arc Package',
+                    parent_tag=ROOT_ID, sync_type=ARC_PACKAGE),
       PermanentItem('google_chrome_bookmarks', name='Bookmarks',
                     parent_tag=ROOT_ID, sync_type=BOOKMARK),
       PermanentItem('bookmark_bar', name='Bookmark Bar',