[Sync] Move PageTransitions enums to SyncEnums

sync/protocol/sync_enums.proto

 // 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.
 //
 // Sync protocol for communication between sync client and server.
 
 // Update proto_value_conversions{.h,.cc,_unittest.cc} if you change
 // any fields in this file.
 
 syntax = "proto2";
@@ skipping 17 matching lines @@
 
     // |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.
   }
 
+  // Types of transitions between pages.
+  enum PageTransition {
+    LINK = 0;
+    TYPED = 1;
+    AUTO_BOOKMARK = 2;
+    AUTO_SUBFRAME = 3;
+    MANUAL_SUBFRAME = 4;
+    GENERATED = 5;
+    START_PAGE = 6;
+    FORM_SUBMIT = 7;
+    RELOAD = 8;
+    KEYWORD = 9;
+    KEYWORD_GENERATED = 10;
+    CHAIN_START = 12;
+    CHAIN_END = 13;
+  }
+
+  // These qualifiers further define the transition.
+  enum PageTransitionQualifier {
+    CLIENT_REDIRECT = 1;
+    SERVER_REDIRECT = 2;
+  }
+
   enum ErrorType {
     SUCCESS            = 0;
     ACCESS_DENIED      = 1;   // Returned when the user doesn't have access to
                               // store (instead of HTTP 401).
     NOT_MY_BIRTHDAY    = 2;   // Returned when the server and client disagree on
                               // the store birthday.
     THROTTLED          = 3;   // Returned when the store has exceeded the
                               // allowed bandwidth utilization.
     AUTH_EXPIRED       = 4;   // Auth token or cookie has expired.
     USER_NOT_ACTIVATED = 5;   // User doesn't have the Chrome bit set on that
@@ skipping 19 matching lines @@
     CLEAR_USER_DATA_AND_RESYNC  = 1; // Clear user data from dashboard and
                                      // setup sync again.
     ENABLE_SYNC_ON_ACCOUNT      = 2; // The administrator needs to enable sync
                                      // on the account.
     STOP_AND_RESTART_SYNC       = 3; // Stop sync and set up sync again.
     DISABLE_SYNC_ON_CLIENT      = 4; // Wipe the client of all sync data and
                                      // stop syncing.
     UNKNOWN_ACTION              = 5; // This is the default.
   }
 }