DB quota

content/common/database_messages.h

 // Copyright (c) 2011 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.
 
 // Multiply-included message file, no include guard.
 
 #include "ipc/ipc_message_macros.h"
 #include "ipc/ipc_param_traits.h"
 #include "ipc/ipc_platform_file.h"
 
 #define IPC_MESSAGE_START DatabaseMsgStart
 
 // Database messages sent from the browser to the renderer.
 
 // Notifies the child process of the new database size
-IPC_MESSAGE_CONTROL4(DatabaseMsg_UpdateSize,
+IPC_MESSAGE_CONTROL3(DatabaseMsg_UpdateSize,
                      string16 /* the origin */,
                      string16 /* the database name */,
-                     int64 /* the new database size */,
+                     int64 /* the new database size */)
+
+// Notifies the child process of the new space available
+IPC_MESSAGE_CONTROL2(DatabaseMsg_UpdateSpaceAvailable,
+                     string16 /* the origin */,
                      int64 /* space available to origin */)
 
+// Notifies the child process to reset it's cached value for the origin.
+IPC_MESSAGE_CONTROL1(DatabaseMsg_ResetSpaceAvailable,
+                     string16 /* the origin */)
+
 // Asks the child process to close a database immediately
 IPC_MESSAGE_CONTROL2(DatabaseMsg_CloseImmediately,
                      string16 /* the origin */,
                      string16 /* the database name */)
 
 // Database messages sent from the renderer to the browser.
 
 // Asks the browser process to open a DB file with the given name.
 IPC_SYNC_MESSAGE_CONTROL2_1(DatabaseHostMsg_OpenFile,
                             string16 /* vfs file name */,
                             int /* desired flags */,
                             IPC::PlatformFileForTransit /* file_handle */)
 
 // Asks the browser process to delete a DB file
 IPC_SYNC_MESSAGE_CONTROL2_1(DatabaseHostMsg_DeleteFile,
                             string16 /* vfs file name */,
                             bool /* whether or not to sync the directory */,
                             int /* SQLite error code */)
 
 // Asks the browser process to return the attributes of a DB file
 IPC_SYNC_MESSAGE_CONTROL1_1(DatabaseHostMsg_GetFileAttributes,
                             string16 /* vfs file name */,
                             int32 /* the attributes for the given DB file */)
 
 // Asks the browser process to return the size of a DB file
 IPC_SYNC_MESSAGE_CONTROL1_1(DatabaseHostMsg_GetFileSize,
                             string16 /* vfs file name */,
                             int64 /* the size of the given DB file */)
 
+// Asks the browser process for the amount of space available to an origin
+IPC_SYNC_MESSAGE_CONTROL1_1(DatabaseHostMsg_GetSpaceAvailable,
+                            string16 /* origin identifier */,
+                            int64 /* remaining space available */)
+
 // Notifies the browser process that a new database has been opened
 IPC_MESSAGE_CONTROL4(DatabaseHostMsg_Opened,
                      string16 /* origin identifier */,
                      string16 /* database name */,
                      string16 /* database description */,
                      int64 /* estimated size */)
 
 // Notifies the browser process that a database might have been modified
 IPC_MESSAGE_CONTROL2(DatabaseHostMsg_Modified,
                      string16 /* origin identifier */,
                      string16 /* database name */)
 
 // Notifies the browser process that a database is about to close
 IPC_MESSAGE_CONTROL2(DatabaseHostMsg_Closed,
                      string16 /* origin identifier */,
                      string16 /* database name */)