Move COMException to shared partition (dotnet/corert#6803)

* Move COMException to shared partition

* Review feedback

Signed-off-by: dotnet-bot <[email protected]>

netcore/System.Private.CoreLib/shared/System.Private.CoreLib.Shared.projitems

@@ -580,6 +580,7 @@
     <Compile Include="$(MSBuildThisFileDirectory)System\Runtime\InteropServices\BStrWrapper.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)System\Runtime\InteropServices\BestFitMappingAttribute.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)System\Runtime\InteropServices\CallingConvention.cs" />
+    <Compile Include="$(MSBuildThisFileDirectory)System\Runtime\InteropServices\COMException.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)System\Runtime\InteropServices\CharSet.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)System\Runtime\InteropServices\ClassInterfaceAttribute.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)System\Runtime\InteropServices\ClassInterfaceType.cs" />

netcore/System.Private.CoreLib/shared/System/Runtime/InteropServices/COMException.cs

@@ -0,0 +1,74 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using System.Runtime.Serialization;
+using System.Globalization;
+using System.Text;
+
+namespace System.Runtime.InteropServices
+{
+    // Exception for COM Interop errors where we don't recognize the HResult.
+    /// <summary>
+    /// Exception class for all errors from COM Interop where we don't
+    /// recognize the HResult.
+    /// </summary>
+    [Serializable]
+    [System.Runtime.CompilerServices.TypeForwardedFrom("mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089")]
+    public class COMException : ExternalException
+    {
+        public COMException()
+            : base(SR.Arg_COMException)
+        {
+            HResult = HResults.E_FAIL;
+        }
+
+        public COMException(string message)
+            : base(message)
+        {
+            HResult = HResults.E_FAIL;
+        }
+
+        public COMException(string message, Exception inner)
+            : base(message, inner)
+        {
+            HResult = HResults.E_FAIL;
+        }
+
+        public COMException(string message, int errorCode)
+            : base(message)
+        {
+            HResult = errorCode;
+        }
+
+        protected COMException(SerializationInfo info, StreamingContext context) : base(info, context)
+        {
+        }
+
+        public override string ToString()
+        {
+            StringBuilder s = new StringBuilder();
+            
+            string className = GetType().ToString();
+            s.Append(className).Append(" (0x").Append(HResult.ToString("X8", CultureInfo.InvariantCulture)).Append(')');
+
+            string message = Message;
+            if (!string.IsNullOrEmpty(message))
+            {
+                s.Append(": ").Append(message);
+            }
+
+            Exception innerException = InnerException;
+            if (innerException != null)
+            {
+                s.Append(" ---> ").Append(innerException.ToString());
+            }
+
+            string stackTrace = StackTrace;
+            if (stackTrace != null)
+                s.Append(Environment.NewLine).Append(stackTrace);
+
+            return s.ToString();
+        }
+    }
+}