add place holder

src/Compilers/CSharp/Portable/CSharpCodeAnalysis.csproj

@@ -452,6 +452,7 @@
     <Compile Include="Lowering\SynthesizedSubmissionFields.cs" />
     <Compile Include="Lowering\SyntheticBoundNodeFactory.cs" />
     <Compile Include="Lowering\UnmatchedGotoFinder.cs" />
+    <Compile Include="Operations\CSharpOperationFactory.cs" />
     <Compile Include="Parser\AbstractLexer.cs" />
     <Compile Include="Parser\BlendedNode.cs" />
     <Compile Include="Parser\Blender.cs" />
@@ -867,6 +868,7 @@
     <InternalsVisibleToTest Include="Roslyn.Services.Editor.CSharp.UnitTests" />
     <InternalsVisibleToTest Include="Roslyn.Services.Editor2.UnitTests" />
   </ItemGroup>
+  <ItemGroup />
   <Import Project="..\CSharpAnalyzerDriver\CSharpAnalyzerDriver.projitems" Label="Shared" />
   <Import Project="..\..\..\..\build\Targets\Imports.targets" />
-</Project>
+</Project>
\ No newline at end of file

src/Compilers/CSharp/Portable/Operations/CSharpOperationFactory.cs

+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Microsoft.CodeAnalysis.CSharp.Operations
+{
+    class CSharpOperationFactory
+    {
+    }
+}