Move all remaining appcache-related code to content namespace

content/browser/service_worker/service_worker_disk_cache.cc

 // Copyright 2014 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/browser/service_worker/service_worker_disk_cache.h"
 
 namespace content {
 
 ServiceWorkerResponseReader::ServiceWorkerResponseReader(
     int64 response_id, ServiceWorkerDiskCache* disk_cache)
-    : appcache::AppCacheResponseReader(response_id, 0, disk_cache) {
+    : AppCacheResponseReader(response_id, 0, disk_cache) {
 }
 
 ServiceWorkerResponseWriter::ServiceWorkerResponseWriter(
     int64 response_id, ServiceWorkerDiskCache* disk_cache)
-    : appcache::AppCacheResponseWriter(response_id, 0, disk_cache) {
-}
-
-HttpResponseInfoIOBuffer::~HttpResponseInfoIOBuffer() {
+    : AppCacheResponseWriter(response_id, 0, disk_cache) {
 }
 
 }  // namespace content