AppCache: Use a dedicated thread for the disk cache.

webkit/appcache/appcache_disk_cache.h

 // 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.
 
 #ifndef WEBKIT_APPCACHE_APPCACHE_DISK_CACHE_H_
 #define WEBKIT_APPCACHE_APPCACHE_DISK_CACHE_H_
 
 #include <vector>
 
 #include "base/scoped_ptr.h"
@@ skipping 11 matching lines @@
 //    calls are queued up and serviced once the disk_cache::Backend is
 //    really ready to go.
 class AppCacheDiskCache {
  public:
   AppCacheDiskCache();
   ~AppCacheDiskCache();
 
   // Initializes the object to use disk backed storage.
   int InitWithDiskBackend(const FilePath& disk_cache_directory,
                           int disk_cache_size, bool force,
+                          base::MessageLoopProxy* cache_thread,
                           net::CompletionCallback* callback);
 
   // Initializes the object to use memory only storage.
   // This is used for Chrome's incognito browsing.
   int InitWithMemBackend(int disk_cache_size,
                          net::CompletionCallback* callback);
 
   void Disable();
   bool is_disabled() const { return is_disabled_; }
 
@@ skipping 36 matching lines @@
     PendingCall(PendingCallType call_type, int64 key,
                 disk_cache::Entry** entry, net::CompletionCallback* callback)
         : call_type(call_type), key(key), entry(entry), callback(callback) {}
   };
   typedef std::vector<PendingCall> PendingCalls;
 
   bool is_initializing() const {
     return create_backend_callback_.get() != NULL;
   }
   int Init(net::CacheType cache_type, const FilePath& directory,
-           int cache_size, bool force, net::CompletionCallback* callback);
+           int cache_size, bool force, base::MessageLoopProxy* cache_thread,
+           net::CompletionCallback* callback);
   void OnCreateBackendComplete(int rv);
 
   bool is_disabled_;
   net::CompletionCallback* init_callback_;
   scoped_refptr<CreateBackendCallback> create_backend_callback_;
   PendingCalls pending_calls_;
   scoped_ptr<disk_cache::Backend> disk_cache_;
 };
 
 }  // namespace appcache
 
 #endif  // WEBKIT_APPCACHE_APPCACHE_DISK_CACHE_H_