From 582df7b6435b8bfca8ab74e7aa422b29d0878041 Mon Sep 17 00:00:00 2001
From: Michael Goderbauer <goderbauer@google.com>
Date: Tue, 7 Mar 2017 11:14:59 -0800
Subject: [PATCH] Minor fixes to SDK update PowerShell Script (#8617)

* for Win 7, we need to import BitsTransfer before using it
* switch to PowerShell's build-in archive expander (instead of relying on .NET)
---
 bin/internal/update_dart_sdk.ps1 | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/bin/internal/update_dart_sdk.ps1 b/bin/internal/update_dart_sdk.ps1
index 300aac4d6d..8a8cd8cef0 100644
--- a/bin/internal/update_dart_sdk.ps1
+++ b/bin/internal/update_dart_sdk.ps1
@@ -41,9 +41,9 @@ if (Test-Path $dartSdkPath) {
 New-Item $dartSdkPath -force -type directory | Out-Null
 $dartSdkZip = "$cachePath\dart-sdk.zip"
 
+Import-Module BitsTransfer
 Start-BitsTransfer -Source $dartSdkUrl -Destination $dartSdkZip
-Add-Type -assembly "system.io.compression.filesystem"
-[io.compression.zipfile]::ExtractToDirectory($dartSdkZip, $cachePath)
+Expand-Archive $dartSdkZip -DestinationPath $cachePath
 Remove-Item $dartSdkZip
 $dartSdkVersion | Out-File $dartSdkStampPath -Encoding ASCII