Add mechanism to auto mount file systems in response to a URL request.

chrome/browser/sync_file_system/local/canned_syncable_file_system.cc

 // Copyright 2013 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 "chrome/browser/sync_file_system/local/canned_syncable_file_system.h"
 
 #include <algorithm>
 #include <iterator>
 
 #include "base/bind.h"
@@ skipping 236 matching lines @@
   ScopedVector<fileapi::FileSystemBackend> additional_backends;
   additional_backends.push_back(SyncFileSystemBackend::CreateForTesting());
 
   file_system_context_ = new FileSystemContext(
       io_task_runner_.get(),
       file_task_runner_.get(),
       fileapi::ExternalMountPoints::CreateRefCounted().get(),
       storage_policy.get(),
       quota_manager_ ? quota_manager_->proxy() : NULL,
       additional_backends.Pass(),
+      std::vector<fileapi::URLRequestAutoMountHandler>(),
       data_dir_.path(), options);
 
   is_filesystem_set_up_ = true;
 }
 
 void CannedSyncableFileSystem::TearDown() {
   quota_manager_ = NULL;
   file_system_context_ = NULL;
 
   // Make sure we give some more time to finish tasks on other threads.
@@ skipping 478 matching lines @@
   sync_status_ = status;
   base::MessageLoop::current()->Quit();
 }
 
 void CannedSyncableFileSystem::InitializeSyncStatusObserver() {
   ASSERT_TRUE(io_task_runner_->RunsTasksOnCurrentThread());
   backend()->sync_context()->sync_status()->AddObserver(this);
 }
 
 }  // namespace sync_file_system