[Sync] Deprecate sync session page state field

components/sessions/core/serialized_navigation_entry.cc

 // Copyright 2013 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.
 
 #include "components/sessions/core/serialized_navigation_entry.h"
 
 #include "base/pickle.h"
 #include "base/strings/utf_string_conversions.h"
 #include "components/sessions/core/serialized_navigation_driver.h"
 #include "sync/protocol/session_specifics.pb.h"
@@ skipping 18 matching lines @@
 }
 
 SerializedNavigationEntry::~SerializedNavigationEntry() {}
 
 SerializedNavigationEntry SerializedNavigationEntry::FromSyncData(
     int index,
     const sync_pb::TabNavigation& sync_data) {
   SerializedNavigationEntry navigation;
   navigation.index_ = index;
   navigation.unique_id_ = sync_data.unique_id();
-  navigation.encoded_page_state_ = sync_data.state();
   if (sync_data.has_correct_referrer_policy()) {
     navigation.referrer_url_ = GURL(sync_data.referrer());
     navigation.referrer_policy_ = sync_data.correct_referrer_policy();
   } else {
     int mapped_referrer_policy;
     if (SerializedNavigationDriver::Get()->MapReferrerPolicyToNewValues(
             sync_data.obsolete_referrer_policy(), &mapped_referrer_policy)) {
       navigation.referrer_url_ = GURL(sync_data.referrer());
     } else {
       navigation.referrer_url_ = GURL();
     }
     navigation.referrer_policy_ = mapped_referrer_policy;
-    navigation.encoded_page_state_ =
-        SerializedNavigationDriver::Get()->StripReferrerFromPageState(
-            navigation.encoded_page_state_);
   }
   navigation.virtual_url_ = GURL(sync_data.virtual_url());
   navigation.title_ = base::UTF8ToUTF16(sync_data.title());
 
   uint32 transition = 0;
   if (sync_data.has_page_transition()) {
     switch (sync_data.page_transition()) {
       case sync_pb::SyncEnums_PageTransition_LINK:
         transition = ui::PAGE_TRANSITION_LINK;
         break;
@@ skipping 399 matching lines @@
           redirect_chain_[last_entry].spec());
     }
   }
 
   sync_data.set_is_restored(is_restored_);
 
   return sync_data;
 }
 
 }  // namespace sessions