Propagate the read_only_hardware flag of volumes to js.

chrome/browser/chromeos/extensions/file_manager/file_manager_private_apitest.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 <stddef.h>
 #include <stdint.h>
 
 #include "base/macros.h"
 #include "base/memory/ptr_util.h"
 #include "base/run_loop.h"
@@ skipping 28 matching lines @@
   const char* drive_label;
   const char* vendor_id;
   const char* vendor_name;
   const char* product_id;
   const char* product_name;
   const char* fs_uuid;
   const char* system_path_prefix;
   chromeos::DeviceType device_type;
   uint64_t size_in_bytes;
   bool is_parent;
-  bool is_read_only;
+  bool is_read_only_hardware;
   bool has_media;
   bool on_boot_device;
   bool on_removable_device;
   bool is_hidden;
 };
 
 struct TestMountPoint {
   std::string source_path;
   std::string mount_path;
   chromeos::MountType mount_type;
@@ skipping 42 matching lines @@
     true,
     true,
     true,
     true,
     false,
     false
   },
   {
     "system_path3",
     "file_path3",
-    false,
+    true,  // write_disabled_by_policy
     "device_label3",
     "drive_label3",
     "89ab",
     "vendor3",
     "ef01",
     "product3",
     "00FF-FFFF",
     "system_path_prefix3",
     chromeos::DEVICE_TYPE_OPTICAL_DISC,
     0,
     true,
-    false,
+    false,  // is_hardware_read_only
     false,
     true,
     false,
     false
   }
 };
 
 void DispatchDirectoryChangeEventImpl(
     int* counter,
     const base::FilePath& virtual_path,
@@ skipping 147 matching lines @@
                 kTestDisks[disk_info_index].drive_label,
                 kTestDisks[disk_info_index].vendor_id,
                 kTestDisks[disk_info_index].vendor_name,
                 kTestDisks[disk_info_index].product_id,
                 kTestDisks[disk_info_index].product_name,
                 kTestDisks[disk_info_index].fs_uuid,
                 kTestDisks[disk_info_index].system_path_prefix,
                 kTestDisks[disk_info_index].device_type,
                 kTestDisks[disk_info_index].size_in_bytes,
                 kTestDisks[disk_info_index].is_parent,
-                kTestDisks[disk_info_index].is_read_only,
+                kTestDisks[disk_info_index].is_read_only_hardware,
                 kTestDisks[disk_info_index].has_media,
                 kTestDisks[disk_info_index].on_boot_device,
                 kTestDisks[disk_info_index].on_removable_device,
                 kTestDisks[disk_info_index].is_hidden)));
       }
     }
   }
 
   const DiskMountManager::Disk* FindVolumeBySourcePath(
       const std::string& source_path) {
@@ skipping 137 matching lines @@
                   ->RegisterFileSystem(
                       kLocalMountPointName, storage::kFileSystemTypeNativeLocal,
                       storage::FileSystemMountOption(), mount_point_dir));
   file_manager::VolumeManager::Get(browser()->profile())
       ->AddVolumeForTesting(mount_point_dir, file_manager::VOLUME_TYPE_TESTING,
                             chromeos::DEVICE_TYPE_UNKNOWN,
                             false /* read_only */);
 
   ASSERT_TRUE(RunComponentExtensionTest("file_browser/content_checksum_test"));
 }