Missing include in CefSharp.WinForms.csproj (VS doesn't always save projects unless you ask nicely)

Author: amaitland

CefSharp.WinForms/CefSharp.WinForms.csproj

@@ -51,6 +51,7 @@
     <Reference Include="System.Xml" />
   </ItemGroup>
   <ItemGroup>
+    <Compile Include="Internals\DefaultFocusHandler.cs" />
     <Compile Include="Properties\AssemblyInfo.cs" />
     <Compile Include="ChromiumWebBrowser.cs">
       <SubType>Component</SubType>