[StorageMonitor] Handle EjectDevice call for MTP devices

chrome/browser/storage_monitor/portable_device_watcher_win.cc

Index: chrome/browser/storage_monitor/portable_device_watcher_win.cc
diff --git a/chrome/browser/storage_monitor/portable_device_watcher_win.cc b/chrome/browser/storage_monitor/portable_device_watcher_win.cc
index 2a2b9da9b0894bd04cad45dc3cf439aa525f60de..96dafbd5a6e4ca88d67ccf9c8358a2ca434de638 100644
--- a/chrome/browser/storage_monitor/portable_device_watcher_win.cc
+++ b/chrome/browser/storage_monitor/portable_device_watcher_win.cc
@@ -555,7 +555,19 @@ void PortableDeviceWatcherWin::SetNotifications(
 void PortableDeviceWatcherWin::EjectDevice(
     const std::string& device_id,
     base::Callback<void(StorageMonitor::EjectStatus)> callback) {
-  callback.Run(chrome::StorageMonitor::EJECT_FAILURE);
+  // MTP devices on Windows don't have a detach API needed -- signal
+  // the object as if the device is gone and tell the caller it is OK
+  // to remove.
+  string16 device_location;      // The device_map_ key.
+  string16 storage_object_id;
+  if (!GetMTPStorageInfoFromDeviceId(device_id,
+                                     &device_location, &storage_object_id)) {
+    callback.Run(chrome::StorageMonitor::EJECT_NO_SUCH_DEVICE);
+    return;
+  }
+  HandleDeviceDetachEvent(device_location);
+
+  callback.Run(chrome::StorageMonitor::EJECT_OK);
 }
 
 void PortableDeviceWatcherWin::EnumerateAttachedDevices() {