Remove unnecessary Platform::createMessagePortChannel method

content/renderer/renderer_webkitplatformsupport_impl.cc

 // Copyright (c) 2012 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 "content/renderer/renderer_webkitplatformsupport_impl.h"
 
 #include "base/command_line.h"
 #include "base/files/file_path.h"
 #include "base/lazy_instance.h"
 #include "base/memory/shared_memory.h"
@@ skipping 297 matching lines @@
     const char* canonical_url,
     size_t length) {
   return GetContentClient()->renderer()->VisitedLinkHash(canonical_url, length);
 }
 
 bool RendererWebKitPlatformSupportImpl::isLinkVisited(
     unsigned long long link_hash) {
   return GetContentClient()->renderer()->IsLinkVisited(link_hash);
 }
 
-blink::WebMessagePortChannel*
-RendererWebKitPlatformSupportImpl::createMessagePortChannel() {
-  return new WebMessagePortChannelImpl(child_thread_loop_.get());
-}
-
 void RendererWebKitPlatformSupportImpl::createMessageChannel(
     blink::WebMessagePortChannel** channel1,
     blink::WebMessagePortChannel** channel2) {
-  *channel1 = new WebMessagePortChannelImpl(child_thread_loop_.get());
-  *channel2 = new WebMessagePortChannelImpl(child_thread_loop_.get());
-  (*channel1)->entangle(*channel2);
-  (*channel2)->entangle(*channel1);
+  WebMessagePortChannelImpl::CreatePair(
+      child_thread_loop_.get(), channel1, channel2);
 }
 
 blink::WebPrescientNetworking*
 RendererWebKitPlatformSupportImpl::prescientNetworking() {
   return GetContentClient()->renderer()->GetPrescientNetworking();
 }
 
 bool
 RendererWebKitPlatformSupportImpl::CheckPreparsedJsCachingEnabled() const {
   static bool checked = false;
@@ skipping 840 matching lines @@
     return;
   QuotaDispatcher::ThreadSpecificInstance(
       thread_safe_sender_.get(),
       quota_message_filter_.get())->QueryStorageUsageAndQuota(
           storage_partition,
           static_cast<quota::StorageType>(type),
           QuotaDispatcher::CreateWebStorageQuotaCallbacksWrapper(callbacks));
 }
 
 }  // namespace content