Http cache: Add support for a dedicated cache thread.

webkit/appcache/appcache_disk_cache.cc

 // Copyright (c) 2010 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 "webkit/appcache/appcache_disk_cache.h"
 
 #include "base/file_path.h"
 #include "base/logging.h"
 #include "base/string_util.h"
 #include "net/base/net_errors.h"
@@ skipping 86 matching lines @@
 }
 
 int AppCacheDiskCache::Init(net::CacheType cache_type,
                             const FilePath& cache_directory,
                             int cache_size, bool force,
                             net::CompletionCallback* callback) {
   DCHECK(!is_initializing() && !disk_cache_.get());
   is_disabled_ = false;
   create_backend_callback_ = new CreateBackendCallback(
       this, &AppCacheDiskCache::OnCreateBackendComplete);
+
+  // TODO(michaeln): Pass a valid cache_thread here.
   int rv = disk_cache::CreateCacheBackend(
-      cache_type, cache_directory, cache_size, force,
+      cache_type, cache_directory, cache_size, force, NULL,
       &(create_backend_callback_->backend_ptr_), create_backend_callback_);
   if (rv == net::ERR_IO_PENDING)
     init_callback_ = callback;
   else
     OnCreateBackendComplete(rv);
   return rv;
 }
 
 void AppCacheDiskCache::OnCreateBackendComplete(int rv) {
   if (rv == net::OK) {
@@ skipping 27 matching lines @@
         break;
     }
     if (rv != net::ERR_IO_PENDING)
       iter->callback->Run(rv);
   }
   pending_calls_.clear();
 }
 
 }  // namespace appcache