[Sync] Removing complexity around PROXY_TABS now that empty sessions are provided when disabled.

chrome/browser/ui/webui/foreign_session_handler.cc

Index: chrome/browser/ui/webui/foreign_session_handler.cc
diff --git a/chrome/browser/ui/webui/foreign_session_handler.cc b/chrome/browser/ui/webui/foreign_session_handler.cc
index 62f33c2f54b525147f23e662554d8926dd7d2da1..df6d2570780cc5eec87ba54ca7fba353f4f2b1bf 100644
--- a/chrome/browser/ui/webui/foreign_session_handler.cc
+++ b/chrome/browser/ui/webui/foreign_session_handler.cc
@@ -237,13 +237,6 @@ void ForeignSessionHandler::OnForeignSessionUpdated() {
   HandleGetForeignSessions(nullptr);
 }
 
-bool ForeignSessionHandler::IsTabSyncEnabled() {
-  Profile* profile = Profile::FromWebUI(web_ui());
-  browser_sync::ProfileSyncService* service =
-      ProfileSyncServiceFactory::GetInstance()->GetForProfile(profile);
-  return service && service->GetActiveDataTypes().Has(syncer::PROXY_TABS);
-}
-
 base::string16 ForeignSessionHandler::FormatSessionTime(
     const base::Time& time) {
   // Return a time like "1 hour ago", "2 days ago", etc.
@@ -338,9 +331,7 @@ void ForeignSessionHandler::HandleGetForeignSessions(
       session_list.Append(std::move(session_data));
     }
   }
-  base::FundamentalValue tab_sync_enabled(IsTabSyncEnabled());
-  web_ui()->CallJavascriptFunctionUnsafe("setForeignSessions", session_list,
-                                         tab_sync_enabled);
+  web_ui()->CallJavascriptFunctionUnsafe("setForeignSessions", session_list);
 }
 
 void ForeignSessionHandler::HandleOpenForeignSession(