Replace <link rel="import"> with <import>

sky/framework/xmlhttprequest.sky

Index: sky/framework/xmlhttprequest.sky
diff --git a/sky/framework/xmlhttprequest.sky b/sky/framework/xmlhttprequest.sky
index 724c9d2842d35694c3b67e80e8918a212d9fe4b8..b0c25e9d7677e41c144e0e113db66847cf33da39 100644
--- a/sky/framework/xmlhttprequest.sky
+++ b/sky/framework/xmlhttprequest.sky
@@ -1,8 +1,8 @@
-<link rel="import" href="/mojo/public/sky/core.sky" as="core" />
-<link rel="import" href="/mojo/public/sky/unicode.sky" as="unicode" />
-<link rel="import" href="/mojo/services/public/interfaces/network/network_service.mojom.sky" as="net" />
-<link rel="import" href="/mojo/services/public/interfaces/network/url_loader.mojom.sky" as="loader" />
-<link rel="import" href="shell.sky" as="shell" />
+<import src="/mojo/public/sky/core.sky" as="core" />
+<import src="/mojo/public/sky/unicode.sky" as="unicode" />
+<import src="/mojo/services/public/interfaces/network/network_service.mojom.sky" as="net" />
+<import src="/mojo/services/public/interfaces/network/url_loader.mojom.sky" as="loader" />
+<import src="shell.sky" as="shell" />
 <script>
 function XMLHttpRequest() {
   this.networkService_ = shell.connectToService(