Switch to standard integer types in ios/.

ios/chrome/browser/snapshots/lru_cache.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/browser/snapshots/lru_cache.h"
 
+#include <stddef.h>
+
 #include "base/containers/hash_tables.h"
 #include "base/containers/mru_cache.h"
 #include "base/mac/scoped_nsobject.h"
+#include "base/macros.h"
 #include "base/memory/scoped_ptr.h"
 
 namespace {
 
 class MRUCacheNSObjectDelegate {
  public:
   MRUCacheNSObjectDelegate(id<LRUCacheDelegate> delegate)
       : delegate_(delegate) {}
 
   MRUCacheNSObjectDelegate(const MRUCacheNSObjectDelegate& other) = default;
@@ skipping 106 matching lines @@
   return _cache->empty();
 }
 
 #pragma mark - Private
 
 - (void)lruCacheWillEvictObject:(id<NSObject>)obj {
   [self.delegate lruCacheWillEvictObject:obj];
 }
 
 @end