Turn app notifications sync to be on by default

chrome/app/generated_resources.grd

Index: chrome/app/generated_resources.grd
diff --git a/chrome/app/generated_resources.grd b/chrome/app/generated_resources.grd
index f7f3d17a658de5116b65876fa6cfa849a5af37cc..5a785e5ef8ea9c8b77dfef4e659a7649a4cd0731 100644
--- a/chrome/app/generated_resources.grd
+++ b/chrome/app/generated_resources.grd
@@ -4767,11 +4767,11 @@ Keep your key file in a safe place. You will need it to create new versions of y
       <message name="IDS_FLAGS_SYNC_TABS_DESCRIPTION" desc="Description for the flag to enable syncing the open tabs datatype">
         Enable open tabs in the sync options. This allows syncing your open tabs to other clients.
       </message>
-      <message name="IDS_FLAGS_SYNC_APP_NOTIFICATIONS_NAME" desc="Title for the flag to enable syncing the app notifications datatype">
-        Enable syncing app notifications
+      <message name="IDS_FLAGS_SYNC_APP_NOTIFICATIONS_NAME" desc="Title for the flag to disable syncing the app notifications datatype">
+        Disable syncing app notifications
       </message>
-      <message name="IDS_FLAGS_SYNC_APP_NOTIFICATIONS_DESCRIPTION" desc="Description for the flag to enable syncing the app notifications datatype">
-        Enable app notifications in the sync options. This allows syncing notifications received from your apps to other clients.
+      <message name="IDS_FLAGS_SYNC_APP_NOTIFICATIONS_DESCRIPTION" desc="Description for the flag to disable syncing the app notifications datatype">
+        Disable app notifications in the sync options. This turns off syncing notifications received from your apps to other clients.
       </message>
       <if expr="pp_ifdef('android')">
         <message name="IDS_FLAGS_SYNC_TYPED_URLS_NAME" desc="Title for the flag to enable syncing the TypedUrl datatype">