database_dispatcher_host changes.

chrome/common/db_message_filter.h

 // Copyright (c) 2009 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_COMMON_DB_MESSAGE_FILTER_H_
 #define CHROME_COMMON_DB_MESSAGE_FILTER_H_
 
 #include "base/atomic_sequence_num.h"
 #include "base/id_map.h"
 #include "base/scoped_ptr.h"
@@ skipping 63 matching lines @@
   virtual void OnFilterAdded(IPC::Channel* channel);
 
   // Called when the channel encounters a problem. The filter should clean up
   // its internal data and not accept any more messages.
   virtual void OnChannelError();
 
   // Called when the channel is closing. The filter should clean up its internal
   // and not accept any more messages.
   virtual void OnChannelClosing();
 
-  // Processes the reply to a DB request.
+  // Processes the reply to a sync DB request.
   template<class ResultType>
   void OnResponse(int32 message_id, ResultType result) {
     DBMessageState *state = messages_awaiting_replies_->Lookup(message_id);
     if (state) {
       messages_awaiting_replies_->Remove(message_id);
       *reinterpret_cast<ResultType*>(state->result_address_) = result;
       state->waitable_event_->Signal();
     }
   }
 
+  // Processes IPCs that indicate a change in the size of a DB file.
+  void OnDatabaseUpdateSize(const string16& origin_identifier,
+                            const string16& database_name,
+                            int64 database_size,
+                            int64 space_available);
+
   // The message loop for the IO thread.
   MessageLoop* io_thread_message_loop_;
 
   // The channel to which this filter was added.
   IPC::Channel* channel_;
 
   // A lock around the channel.
   scoped_ptr<Lock> channel_lock_;
 
   // The shutdown event.
   base::WaitableEvent* shutdown_event_;
 
   // The list of messages awaiting replies. For each such message we store a
   // DBMessageState instance.
   scoped_ptr<IDMap<DBMessageState> > messages_awaiting_replies_;
 
   // A thread-safe unique number generator.
   scoped_ptr<base::AtomicSequenceNumber> unique_id_generator_;
 
   // The singleton.
   static DBMessageFilter* instance_;
 };
 
-#endif // CHROME_COMMON_DB_MESSAGE_FILTER_H_
+#endif  // CHROME_COMMON_DB_MESSAGE_FILTER_H_