.Net Core - Update example to self host the BrowserSubProcess

Eliminates the requirements for .Net 4.5.2, the application exe is used as the browsersubprocess.
Additional manual import of CefSharp.BrowserSubProcess.Core is required see csproj file for example

TODO: OffScreen version is crashing on exit so it's been updated, it just isn't using itself as the BrowserSubProcess

CefSharp.MinimalExample.WinForms/CefSharp.MinimalExample.WinForms.netcore.csproj

@@ -27,4 +27,25 @@
       <Private>true</Private>
     </Reference>
   </ItemGroup>
+
+  <!-- Include CefSharp.BrowserSubprocess.Core so we can selfhost the BrowserSubProcess using our exe -->
+  <Choose>
+    <When Condition="'$(PlatformTarget)' == 'x64'">
+      <ItemGroup>
+        <Reference Include="CefSharp.BrowserSubprocess.Core">
+          <HintPath>$(CefSharpBrowserProcessCore64)</HintPath>
+          <Private>true</Private>
+        </Reference>
+      </ItemGroup>
+    </When>
+    <!-- x86, Win32 and AnyCPU -->
+    <Otherwise>
+      <ItemGroup>
+        <Reference Include="CefSharp.BrowserSubprocess.Core">
+          <HintPath>$(CefSharpBrowserProcessCore32)</HintPath>
+          <Private>true</Private>
+        </Reference>
+      </ItemGroup>
+    </Otherwise>
+  </Choose>
 </Project>

CefSharp.MinimalExample.WinForms/Program.cs

@@ -12,17 +12,36 @@ namespace CefSharp.MinimalExample.WinForms
     public class Program
     {
         [STAThread]
-        public static void Main()
+        public static int Main(string[] args)
         {
             //For Windows 7 and above, best to include relevant app.manifest entries as well
             Cef.EnableHighDPISupport();
 
+#if NETCOREAPP
+            //We are using our current exe as the BrowserSubProcess
+            //Multiple instances will be spawned to handle all the 
+            //Chromium proceses, render, gpu, network, plugin, etc.
+            var subProcessExe = new CefSharp.BrowserSubprocess.BrowserSubprocessExecutable();
+            var result = subProcessExe.Main(args);
+            if (result > 0)
+            {
+                return result;
+            }
+#endif
+
             var settings = new CefSettings()
             {
                 //By default CefSharp will use an in-memory cache, you need to specify a Cache Folder to persist data
                 CachePath = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData), "CefSharp\\Cache")
             };
 
+#if NETCOREAPP
+            //We use our Applications exe as the BrowserSubProcess, multiple copies
+            //will be spawned
+            var exePath = System.Diagnostics.Process.GetCurrentProcess().MainModule.FileName;
+            settings.BrowserSubprocessPath = exePath;
+#endif
+
             //Example of setting a command line argument
             //Enables WebRTC
             settings.CefCommandLineArgs.Add("enable-media-stream", "1");
@@ -32,6 +51,8 @@ namespace CefSharp.MinimalExample.WinForms
 
             var browser = new BrowserForm();
             Application.Run(browser);
+
+            return 0;
         }
     }
 }