Re-enable skipped runtime compilation tests

src/Mvc/test/Microsoft.AspNetCore.Mvc.FunctionalTests/ErrorPageTests.cs

@@ -25,7 +25,7 @@ namespace Microsoft.AspNetCore.Mvc.FunctionalTests
 
         public HttpClient Client { get; }
 
-        [Fact(Skip = "https://github.com/aspnet/Mvc/issues/8753")]
+        [Fact]
         public async Task CompilationFailuresAreListedByErrorPageMiddleware()
         {
             // Arrange
@@ -45,7 +45,7 @@ namespace Microsoft.AspNetCore.Mvc.FunctionalTests
             Assert.DoesNotContain(PreserveCompilationContextMessage, content);
         }
 
-        [Fact(Skip = "https://github.com/aspnet/Mvc/issues/8753")]
+        [Fact]
         public async Task ParseFailuresAreListedByErrorPageMiddleware()
         {
             // Arrange
@@ -67,7 +67,7 @@ namespace Microsoft.AspNetCore.Mvc.FunctionalTests
             Assert.Contains(expected, content);
         }
 
-        [Fact(Skip = "https://github.com/aspnet/Mvc/issues/8753")]
+        [Fact]
         public async Task CompilationFailuresFromViewImportsAreListed()
         {
             // Arrange
@@ -90,7 +90,7 @@ namespace Microsoft.AspNetCore.Mvc.FunctionalTests
             Assert.Contains(expectedCompilationContent, content);
         }
 
-        [Fact(Skip = "https://github.com/aspnet/Mvc/issues/8753")]
+        [Fact]
         public async Task RuntimeErrorAreListedByErrorPageMiddleware()
         {
             // Arrange

src/Mvc/test/WebSites/ErrorPageMiddlewareWebSite/ErrorPageMiddlewareWebSite.csproj

@@ -2,7 +2,6 @@
 
   <PropertyGroup>
     <TargetFramework>netcoreapp3.0</TargetFramework>
-    <DebugType Condition="'$(TargetFramework)' == 'net461'">full</DebugType>
     <!-- We want to validate runtime parser \ compilation exceptions -->
     <RazorCompileOnBuild>false</RazorCompileOnBuild>
     <IsTestAssetProject>true</IsTestAssetProject>
@@ -10,6 +9,7 @@
 
   <ItemGroup>
     <Reference Include="Microsoft.AspNetCore.Mvc" />
+    <Reference Include="Microsoft.AspNetCore.Mvc.Razor.RuntimeCompilation" />
 
     <Reference Include="Microsoft.AspNetCore.Diagnostics" />
     <Reference Include="Microsoft.AspNetCore.Server.IISIntegration" />

src/Mvc/test/WebSites/ErrorPageMiddlewareWebSite/Startup.cs

@@ -15,6 +15,7 @@ namespace ErrorPageMiddlewareWebSite
         public void ConfigureServices(IServiceCollection services)
         {
             services.AddMvc()
+                .AddRazorRuntimeCompilation()
                 .SetCompatibilityVersion(CompatibilityVersion.Latest);
         }