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

chrome/browser/chromeos/drive/file_system_util_unittest.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 "chrome/browser/chromeos/drive/file_system_util.h"
 
 #include "base/file_util.h"
 #include "base/files/file_path.h"
 #include "base/files/scoped_temp_dir.h"
 #include "base/message_loop/message_loop.h"
@@ skipping 135 matching lines @@
   scoped_refptr<fileapi::ExternalMountPoints> mount_points =
       fileapi::ExternalMountPoints::CreateRefCounted();
   scoped_refptr<fileapi::FileSystemContext> context(
       new fileapi::FileSystemContext(
           base::MessageLoopProxy::current().get(),
           base::MessageLoopProxy::current().get(),
           mount_points.get(),
           NULL,  // special_storage_policy
           NULL,  // quota_manager_proxy,
           ScopedVector<fileapi::FileSystemBackend>(),
+          std::vector<fileapi::URLRequestAutoMountHandler>(),
           temp_dir_.path(),  // partition_path
           content::CreateAllowFileAccessOptions()));
 
   // Type:"external" + virtual_path:"drive/foo/bar" resolves to "drive/foo/bar".
   const std::string& drive_mount_name =
       GetDriveMountPointPath(&profile).BaseName().AsUTF8Unsafe();
   mount_points->RegisterFileSystem(
       drive_mount_name,
       fileapi::kFileSystemTypeDrive,
       fileapi::FileSystemMountOption(),
@@ skipping 127 matching lines @@
   file = temp_dir.path().AppendASCII("test.txt");
   std::string data = "Hello world!";
   EXPECT_TRUE(google_apis::test_util::WriteStringToFile(file, data));
   EXPECT_FALSE(HasGDocFileExtension(file));
   EXPECT_TRUE(ReadUrlFromGDocFile(file).is_empty());
   EXPECT_TRUE(ReadResourceIdFromGDocFile(file).empty());
 }
 
 }  // namespace util
 }  // namespace drive