Compiles and passes tests

src/Microsoft.AspNet.DataProtection.Abstractions/DataProtectionExtensions.cs

@@ -7,7 +7,7 @@ using System.ComponentModel;
 using System.Diagnostics;
 using Microsoft.AspNet.DataProtection.Infrastructure;
 using Microsoft.AspNet.DataProtection.Abstractions;
-using Microsoft.Dnx.Runtime;
+using Microsoft.Extensions.PlatformAbstractions;
 
 namespace Microsoft.AspNet.DataProtection
 {

src/Microsoft.AspNet.DataProtection.Abstractions/project.json

@@ -10,7 +10,7 @@
       "type": "build",
       "version": ""
     },
-    "Microsoft.Dnx.Runtime.Abstractions": "1.0.0-*"
+    "Microsoft.Extensions.PlatformAbstractions": "1.0.0-*"
   },
   "frameworks": {
     "net451": {},

test/Microsoft.AspNet.DataProtection.Abstractions.Test/DataProtectionExtensionsTests.cs

@@ -8,7 +8,7 @@ using System.Text;
 using Microsoft.AspNet.DataProtection.Infrastructure;
 using Microsoft.AspNet.DataProtection.Abstractions;
 using Microsoft.AspNet.Testing;
-using Microsoft.Dnx.Runtime;
+using Microsoft.Extensions.PlatformAbstractions;
 using Moq;
 using Xunit;