Remove the WebPNetworkClient* from iOS

components/webp_transcode/webp_network_client_factory.mm

-// 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.
-
-#import "components/webp_transcode/webp_network_client_factory.h"
-
-#include "base/logging.h"
-#include "base/sequenced_task_runner.h"
-#include "base/single_thread_task_runner.h"
-#import "components/webp_transcode/webp_network_client.h"
-
-@interface WebPNetworkClientFactory () {
-  scoped_refptr<base::SequencedTaskRunner> _taskRunner;
-}
-@end
-
-@implementation WebPNetworkClientFactory
-
-- (instancetype)init {
-  NOTREACHED() << "Use |-initWithTaskRunner:| instead";
-  return nil;
-}
-
-- (Class)clientClass {
-  return [WebPNetworkClient class];
-}
-
-- (instancetype)initWithTaskRunner:
-    (const scoped_refptr<base::SequencedTaskRunner>&)runner {
-  if ((self = [super init])) {
-    DCHECK(runner);
-    _taskRunner = runner;
-  }
-  return self;
-}
-
-- (CRNForwardingNetworkClient*)clientHandlingAnyRequest {
-  return
-      [[[WebPNetworkClient alloc] initWithTaskRunner:_taskRunner] autorelease];
-}
-
-@end