Adds a new removable storage provider for imageWriterPrivate on Chrome OS

chrome/browser/extensions/api/image_writer_private/removable_storage_provider_chromeos.cc

Index: chrome/browser/extensions/api/image_writer_private/removable_storage_provider_chromeos.cc
diff --git a/chrome/browser/extensions/api/image_writer_private/removable_storage_provider_chromeos.cc b/chrome/browser/extensions/api/image_writer_private/removable_storage_provider_chromeos.cc
new file mode 100644
index 0000000000000000000000000000000000000000..59d71daccc0c6e17580c81c8b469536949109779
--- /dev/null
+++ b/chrome/browser/extensions/api/image_writer_private/removable_storage_provider_chromeos.cc
@@ -0,0 +1,55 @@
+// Copyright 2014 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/extensions/api/image_writer_private/removable_storage_provider.h"
+#include "chromeos/disks/disk_mount_manager.h"
+
+namespace extensions {
+
+const char kUnknownSDDiskModel[] = "SD Card";
+const char kUnknownUSBDiskModel[] = "USB Drive";
+
+using chromeos::disks::DiskMountManager;
+
+// The Chrome OS implementation takes advantage of the Chrome OS
+// DiskMountManager.  This does not expose whether the device is a removable or
+// fixed disk.  In fact, some SD cards will present themselves as fixed disks
+// (see http://crbug.com/340761).  Thus we just expose all USB and SD drives.
+// static
+void RemovableStorageProvider::GetAllDevices(DeviceListReadyCallback callback) {
+  scoped_refptr<StorageDeviceList> device_list(new StorageDeviceList());
+
+  DiskMountManager* disk_mount_manager = DiskMountManager::GetInstance();
+  const DiskMountManager::DiskMap& disks = disk_mount_manager->disks();
+
+  for (DiskMountManager::DiskMap::const_iterator iter = disks.begin();
+       iter != disks.end();
+       ++iter) {
+    const DiskMountManager::Disk& disk = *iter->second;
+    if (disk.is_parent() && !disk.on_boot_device() && disk.has_media() &&
+        (disk.device_type() == chromeos::DEVICE_TYPE_USB ||
+         disk.device_type() == chromeos::DEVICE_TYPE_SD)) {
+      linked_ptr<api::image_writer_private::RemovableStorageDevice> device(
+          new api::image_writer_private::RemovableStorageDevice());
+      device->storage_unit_id = disk.file_path();
+      device->capacity = disk.total_size_in_bytes();
+      device->vendor = disk.vendor_name();
+      device->model = disk.product_name();
+
+      if (device->model.empty() && device->vendor.empty()) {
+        if (disk.device_type() == chromeos::DEVICE_TYPE_USB) {
+          device->model = kUnknownUSBDiskModel;
+        } else {
+          device->model = kUnknownSDDiskModel;
+        }
+      }
+
+      device_list->data.push_back(device);
+    }
+  }
+
+  callback.Run(device_list, true);
+}
+
+}  // namespace extensions