Allow synchronous messages to be sent from threads other than the main thread...

chrome/browser/renderer_host/database_dispatcher_host.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 CHROME_BROWSER_RENDERER_HOST_DATABASE_DISPATCHER_HOST_H_
 #define CHROME_BROWSER_RENDERER_HOST_DATABASE_DISPATCHER_HOST_H_
 
 #include "base/hash_tables.h"
 #include "base/process.h"
 #include "base/ref_counted.h"
@@ skipping 16 matching lines @@
                          IPC::Message::Sender* sender,
                          HostContentSettingsMap *host_content_settings_map);
   void Init(base::ProcessHandle process_handle);
   void Shutdown();
 
   bool OnMessageReceived(const IPC::Message& message, bool* message_was_ok);
 
   // VFS message handlers (IO thread)
   void OnDatabaseOpenFile(const string16& vfs_file_name,
                           int desired_flags,
-                          int32 message_id);
+                          IPC::Message* reply_msg);
   void OnDatabaseDeleteFile(const string16& vfs_file_name,
                             const bool& sync_dir,
-                            int32 message_id);
+                            IPC::Message* reply_msg);
   void OnDatabaseGetFileAttributes(const string16& vfs_file_name,
-                                   int32 message_id);
+                                   IPC::Message* reply_msg);
   void OnDatabaseGetFileSize(const string16& vfs_file_name,
-                             int32 message_id);
+                             IPC::Message* reply_msg);
 
   // Database tracker message handlers (IO thread)
   void OnDatabaseOpened(const string16& origin_identifier,
                         const string16& database_name,
                         const string16& description,
                         int64 estimated_size);
   void OnDatabaseModified(const string16& origin_identifier,
                           const string16& database_name);
   void OnDatabaseClosed(const string16& origin_identifier,
                         const string16& database_name);
@@ skipping 21 matching lines @@
   class PromptDelegate;
 
   void AddObserver();
   void RemoveObserver();
 
   void ReceivedBadMessage(uint32 msg_type);
 
   // VFS message handlers (file thread)
   void DatabaseOpenFile(const string16& vfs_file_name,
                         int desired_flags,
-                        int32 message_id);
+                        IPC::Message* reply_msg);
   void DatabaseDeleteFile(const string16& vfs_file_name,
                           bool sync_dir,
-                          int32 message_id,
+                          IPC::Message* reply_msg,
                           int reschedule_count);
   void DatabaseGetFileAttributes(const string16& vfs_file_name,
-                                 int32 message_id);
+                                 IPC::Message* reply_msg);
   void DatabaseGetFileSize(const string16& vfs_file_name,
-                           int32 message_id);
+                           IPC::Message* reply_msg);
 
   // Database tracker message handlers (file thread)
   void DatabaseOpened(const string16& origin_identifier,
                       const string16& database_name,
                       const string16& description,
                       int64 estimated_size);
   void DatabaseModified(const string16& origin_identifier,
                         const string16& database_name);
   void DatabaseClosed(const string16& origin_identifier,
                       const string16& database_name);
@@ skipping 21 matching lines @@
   bool shutdown_;
 
   // Keeps track of all DB connections opened by this renderer
   webkit_database::DatabaseConnections database_connections_;
 
   // Used to look up permissions at database creation time.
   scoped_refptr<HostContentSettingsMap> host_content_settings_map_;
 };
 
 #endif  // CHROME_BROWSER_RENDERER_HOST_DATABASE_DISPATCHER_HOST_H_