[Sync] Cache encrypted types info in ProfileSyncService

chrome/browser/sync/protocol/client_debug_info.proto

 // Copyright (c) 2011 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.
 //
 // Common sync protocol for encrypted data.
 
-// Update proto_value_conversions{.h,.cc,_unittest.cc} if you change
-// any fields in this file.
-
 syntax = "proto2";
 
 option optimize_for = LITE_RUNTIME;
 option retain_unknown_fields = true;
 
 package sync_pb;
 
 // The additional info here is from SyncerStatus. They get sent when the event
 // SYNC_CYCLE_COMPLETED  is sent.
 message SyncCycleCompletedEventInfo {
@@ skipping 11 matching lines @@
                     // successful auth with the error set to none.
     UPDATED_TOKEN = 2; // Client received an updated token.
     PASSPHRASE_REQUIRED = 3; // Cryptographer needs passphrase.
     PASSPHRASE_ACCEPTED = 4; // Passphrase was accepted by cryptographer.
     INITIALIZATION_COMPLETE = 5; // Sync Initialization is complete.
 
     // |STOP_SYNCING_PERMANENTLY| event should never be seen by the server in
     // the absence of bugs.
     STOP_SYNCING_PERMANENTLY = 6; // Server sent stop syncing permanently.
 
+    ENCRYPTED_TYPES_CHANGED = 9; // Set of encrypted types has changed.
     ENCRYPTION_COMPLETE = 7; // Client has finished encrypting all data.
     ACTIONABLE_ERROR = 8; // Client received an actionable error.
   }
   optional EventType type = 1;
   optional SyncCycleCompletedEventInfo sync_cycle_completed_event_info = 2;
 }
 
 message DebugInfo {
   repeated DebugEventInfo events = 1;
 
   // Whether cryptographer is ready to encrypt and decrypt data.
   optional bool cryptographer_ready = 2;
 
   // Cryptographer has pending keys which indicates the correct passphrase
   // has not been provided yet.
   optional bool cryptographer_has_pending_keys = 3;
 
   // Indicates client has dropped some events to save bandwidth.
   optional bool events_dropped = 4;
 }