Imported Upstream version 4.6.0.125

Former-commit-id: a2155e9bd80020e49e72e86c44da02a8ac0e57a4

mcs/class/referencesource/System.ServiceModel/System/ServiceModel/TimeSpanHelper.cs

@@ -0,0 +1,37 @@
+//-----------------------------------------------------------------------------
+// Copyright (c) Microsoft Corporation.  All rights reserved.
+//-----------------------------------------------------------------------------
+namespace System.ServiceModel
+{
+    using System;
+    using System.Runtime;
+    using System.Globalization;
+
+    static class TimeSpanHelper
+    {
+        static public TimeSpan FromMinutes(int minutes, string text)
+        {
+            TimeSpan value = TimeSpan.FromTicks(TimeSpan.TicksPerMinute * minutes);
+            Fx.Assert(value == TimeSpan.Parse(text, CultureInfo.InvariantCulture), "");
+            return value;
+        }
+        static public TimeSpan FromSeconds(int seconds, string text)
+        {
+            TimeSpan value = TimeSpan.FromTicks(TimeSpan.TicksPerSecond * seconds);
+            Fx.Assert(value == TimeSpan.Parse(text, CultureInfo.InvariantCulture), "");
+            return value;
+        }
+        static public TimeSpan FromMilliseconds(int ms, string text)
+        {
+            TimeSpan value = TimeSpan.FromTicks(TimeSpan.TicksPerMillisecond * ms);
+            Fx.Assert(value == TimeSpan.Parse(text, CultureInfo.InvariantCulture), "");
+            return value;
+        }
+        static public TimeSpan FromDays(int days, string text)
+        {
+            TimeSpan value = TimeSpan.FromTicks(TimeSpan.TicksPerDay * days);
+            Fx.Assert(value == TimeSpan.Parse(text, CultureInfo.InvariantCulture), "");
+            return value;
+        }
+    }
+}