Remove auto raw pointer deduction from non-linux specific code.

ios/chrome/app/spotlight/bookmarks_spotlight_manager.mm

 // Copyright 2015 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 "ios/chrome/app/spotlight/bookmarks_spotlight_manager.h"
 
 #include <memory>
 
 #import <CoreSpotlight/CoreSpotlight.h>
 
@@ skipping 271 matching lines @@
     [self refreshNodeInIndex:node->GetChild(child) initial:initial];
   }
 }
 
 - (NSArray*)spotlightItemsWithURL:(const GURL&)URL
                           favicon:(UIImage*)favicon
                      defaultTitle:(NSString*)defaultTitle {
   NSMutableDictionary* spotlightItems = [[NSMutableDictionary alloc] init];
   std::vector<const bookmarks::BookmarkNode*> nodes;
   _bookmarkModel->GetNodesByURL(URL, &nodes);
-  for (auto node : nodes) {
+  for (auto* node : nodes) {
     NSString* nodeTitle = base::SysUTF16ToNSString(node->GetTitle());
     NSString* spotlightID = [self spotlightIDForURL:URL title:nodeTitle];
     CSSearchableItem* item = [spotlightItems objectForKey:spotlightID];
     if (!item) {
       item = [[super spotlightItemsWithURL:URL
                                    favicon:favicon
                               defaultTitle:nodeTitle] objectAtIndex:0];
     }
     NSMutableArray* nodeKeywords = [[NSMutableArray alloc] init];
     [self getParentKeywordsForNode:node inArray:nodeKeywords];
@@ skipping 34 matching lines @@
                                     spotlight::kCurrentSpotlightIndexVersion]
                forKey:@(spotlight::kSpotlightLastIndexingVersionKey)];
         [_delegate bookmarkUpdated];
       });
     }
   };
   [self clearAllSpotlightItems:completion];
 }
 
 @end