Implement DeleteFile and DeleteDirectory.

chrome/browser/media_galleries/win/mtp_device_delegate_impl_win.cc

Index: chrome/browser/media_galleries/win/mtp_device_delegate_impl_win.cc
diff --git a/chrome/browser/media_galleries/win/mtp_device_delegate_impl_win.cc b/chrome/browser/media_galleries/win/mtp_device_delegate_impl_win.cc
index 5f1234c675e190bda361cbd844c221bc085212ef..81c15b23e20f4c28274005206e4e7a09d03f6c35 100644
--- a/chrome/browser/media_galleries/win/mtp_device_delegate_impl_win.cc
+++ b/chrome/browser/media_galleries/win/mtp_device_delegate_impl_win.cc
@@ -461,7 +461,7 @@ void MTPDeviceDelegateImplWin::ReadBytes(
   NOTREACHED();
 }
 
-bool MTPDeviceDelegateImplWin::IsReadOnly() {
+bool MTPDeviceDelegateImplWin::IsReadOnly() const {
   return true;
 }
 
@@ -473,6 +473,20 @@ void MTPDeviceDelegateImplWin::CopyFileFromLocal(
   NOTREACHED();
 }
 
+void MTPDeviceDelegateImplWin::DeleteFile(
+    const base::FilePath& file_path,
+    const DeleteFileSuccessCallback& success_callback,
+    const ErrorCallback& error_callback) {
+  NOTREACHED();
+}
+
+void MTPDeviceDelegateImplWin::DeleteDirectory(
+    const base::FilePath& file_path,
+    const DeleteDirectorySuccessCallback& success_callback,
+    const ErrorCallback& error_callback) {
+  NOTREACHED();
+}
+
 void MTPDeviceDelegateImplWin::CancelPendingTasksAndDeleteDelegate() {
   DCHECK_CURRENTLY_ON(content::BrowserThread::IO);
   PortableDeviceMapService::GetInstance()->MarkPortableDeviceForDeletion(