Remove the temporary flag to disable the sync confirmation page on linux an windows.

chrome/browser/ui/sync/one_click_signin_sync_starter.h

 // Copyright (c) 2012 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.
 
 #ifndef CHROME_BROWSER_UI_SYNC_ONE_CLICK_SIGNIN_SYNC_STARTER_H_
 #define CHROME_BROWSER_UI_SYNC_ONE_CLICK_SIGNIN_SYNC_STARTER_H_
 
 #include <memory>
 #include <string>
 
@@ skipping 242 matching lines @@
   std::string client_id_;
 
   // This only cares about the first AccountAddedToCookie event. Since
   // SigninTracker always expects an observer, this object will just disregard
   // following AccountAddedToCookie calls triggered by account reconciliation.
   bool first_account_added_to_cookie_;
 
   // Prevents Sync from running until configuration is complete.
   std::unique_ptr<syncer::SyncSetupInProgressHandle> sync_blocker_;
 
-  // Temporary flag to disable new sync confirm page if user choose to create a
-  // new profile after the corp account signin.
+  // Temporary flag used only on macOS to disable new sync confirm page if user
+  // choose to create a new profile.
+  //
+  // TODO(msarda): Remove this flag once the https://crbug.com/677012 fixed.
   bool skip_sync_confirm_;
 
   base::WeakPtrFactory<OneClickSigninSyncStarter> weak_pointer_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(OneClickSigninSyncStarter);
 };
 
 
 #endif  // CHROME_BROWSER_UI_SYNC_ONE_CLICK_SIGNIN_SYNC_STARTER_H_