Enable RL sync by default on iOS

components/reading_list/ios/reading_list_model_bridge_observer.mm

 // Copyright 2016 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.
 
-#import "components/reading_list/reading_list_model_bridge_observer.h"
+#import "components/reading_list/ios/reading_list_model_bridge_observer.h"
 
-#import "components/reading_list/reading_list_entry.h"
-#import "components/reading_list/reading_list_model.h"
+#include "components/reading_list/ios/reading_list_entry.h"
+#include "components/reading_list/ios/reading_list_model.h"
 
 ReadingListModelBridge::ReadingListModelBridge(
     id<ReadingListModelBridgeObserver> observer,
     ReadingListModel* model)
     : observer_(observer), model_(model) {
   DCHECK(model);
   model_->AddObserver(this);
 }
 
 ReadingListModelBridge::~ReadingListModelBridge() {
@@ skipping 94 matching lines @@
 }
 
 void ReadingListModelBridge::ReadingListWillUpdateReadEntry(
     const ReadingListModel* model,
     size_t index) {
   if ([observer_ respondsToSelector:@selector(readingListModel:
                                         willUpdateReadEntryAtIndex:)]) {
     [observer_ readingListModel:model willUpdateReadEntryAtIndex:index];
   }
 }