Fix a boneheaded problem introduced in r182822.

content/common/fileapi/file_system_dispatcher.cc

 // Copyright (c) 2012 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 "content/common/fileapi/file_system_dispatcher.h"
 
 #include "base/file_util.h"
 #include "base/process.h"
 #include "content/common/child_thread.h"
 #include "content/common/fileapi/file_system_messages.h"
@@ skipping 15 matching lines @@
   }
 }
 
 bool FileSystemDispatcher::OnMessageReceived(const IPC::Message& msg) {
   bool handled = true;
   IPC_BEGIN_MESSAGE_MAP(FileSystemDispatcher, msg)
     IPC_MESSAGE_HANDLER(FileSystemMsg_DidOpenFileSystem, OnDidOpenFileSystem)
     IPC_MESSAGE_HANDLER(FileSystemMsg_DidSucceed, OnDidSucceed)
     IPC_MESSAGE_HANDLER(FileSystemMsg_DidReadDirectory, OnDidReadDirectory)
     IPC_MESSAGE_HANDLER(FileSystemMsg_DidReadMetadata, OnDidReadMetadata)
+    IPC_MESSAGE_HANDLER(FileSystemMsg_DidCreateSnapshotFile,
+                        OnDidCreateSnapshotFile)
     IPC_MESSAGE_HANDLER(FileSystemMsg_DidFail, OnDidFail)
     IPC_MESSAGE_HANDLER(FileSystemMsg_DidWrite, OnDidWrite)
     IPC_MESSAGE_HANDLER(FileSystemMsg_DidOpenFile, OnDidOpenFile)
     IPC_MESSAGE_UNHANDLED(handled = false)
   IPC_END_MESSAGE_MAP()
   return handled;
 }
 
 bool FileSystemDispatcher::OpenFileSystem(
     const GURL& origin_url, fileapi::FileSystemType type,
@@ skipping 305 matching lines @@
 void FileSystemDispatcher::OnDidOpenFile(
     int request_id, IPC::PlatformFileForTransit file) {
   fileapi::FileSystemCallbackDispatcher* dispatcher =
       dispatchers_.Lookup(request_id);
   DCHECK(dispatcher);
   dispatcher->DidOpenFile(IPC::PlatformFileForTransitToPlatformFile(file));
   dispatchers_.Remove(request_id);
 }
 
 }  // namespace content