Revert 282890 "[fsp] Add an option for mounting in R/W mode."

trunk/src/chrome/browser/chromeos/file_manager/volume_manager.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/chromeos/file_manager/volume_manager.h"
 
 #include "base/basictypes.h"
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/files/file_path.h"
@@ skipping 202 matching lines @@
     const chromeos::file_system_provider::ProvidedFileSystemInfo&
         file_system_info) {
   VolumeInfo volume_info;
   volume_info.file_system_id = file_system_info.file_system_id();
   volume_info.extension_id = file_system_info.extension_id();
   volume_info.volume_label = file_system_info.display_name();
   volume_info.type = VOLUME_TYPE_PROVIDED;
   volume_info.mount_path = file_system_info.mount_path();
   volume_info.mount_condition = chromeos::disks::MOUNT_CONDITION_NONE;
   volume_info.is_parent = true;
-  volume_info.is_read_only = !file_system_info.writable();
+  volume_info.is_read_only = true;
   volume_info.volume_id = GenerateVolumeId(volume_info);
   return volume_info;
 }
 
 std::string GetMountPointNameForMediaStorage(
     const storage_monitor::StorageInfo& info) {
   std::string name(kFileManagerMTPMountNamePrefix);
   name += info.device_id();
   return name;
 }
@@ skipping 619 matching lines @@
     return;
   if (error_code == chromeos::MOUNT_ERROR_NONE)
     mounted_volumes_.erase(volume_info.volume_id);
 
   FOR_EACH_OBSERVER(VolumeManagerObserver,
                     observers_,
                     OnVolumeUnmounted(error_code, volume_info));
 }
 
 }  // namespace file_manager