Revert 75287 - [Sync] Initial support for encrypting any datatype (no UI hook...

chrome/browser/sync/protocol/nigori_specifics.proto

 // Copyright (c) 2010 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.
 //
 // Sync protocol datatype extension for nigori keys.
 
 // Update proto_value_conversions{.h,.cc,_unittest.cc} if you change
 // any fields in this file.
 
 syntax = "proto2";
@@ skipping 16 matching lines @@
 message NigoriKeyBag {
   repeated NigoriKey key = 2;
 }
 
 // Properties of nigori sync object.
 message NigoriSpecifics {
   optional EncryptedData encrypted = 1;
   // True if |encrypted| is encrypted using a passphrase
   // explicitly set by the user.
   optional bool using_explicit_passphrase = 2;
-  
-  // Booleans corresponding to whether a datatype should be encrypted.
-  // Passwords are always encrypted, so we don't need a field here.
-  optional bool encrypt_bookmarks = 3;
-  optional bool encrypt_preferences = 4;
-  optional bool encrypt_autofill_profile = 5;
-  optional bool encrypt_autofill = 6;
-  optional bool encrypt_themes = 7;
-  optional bool encrypt_typed_urls = 8;
-  optional bool encrypt_extensions = 9;
-  optional bool encrypt_sessions = 10;
-  optional bool encrypt_apps = 11;
 }
 
 extend EntitySpecifics {
   optional NigoriSpecifics nigori = 47745;
 }