Move TplEtwProvider to shared partition (#22120)

Author: marek-safar

src/System.Private.CoreLib/System.Private.CoreLib.csproj

@@ -279,7 +279,6 @@
     <Compile Include="$(BclSourcesRoot)\System\Threading\SynchronizationContext.cs" />
     <Compile Include="$(BclSourcesRoot)\System\Threading\Tasks\Task.cs" />
     <Compile Include="$(BclSourcesRoot)\System\Threading\Tasks\TaskContinuation.cs" />
-    <Compile Include="$(BclSourcesRoot)\System\Threading\Tasks\TPLETWProvider.cs" />
     <Compile Include="$(BclSourcesRoot)\System\Threading\Thread.cs" />
     <Compile Include="$(BclSourcesRoot)\System\Threading\ThreadPool.cs" />
     <Compile Include="$(BclSourcesRoot)\System\Threading\Timer.cs" />

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

@@ -788,6 +788,7 @@
     <Compile Include="$(MSBuildThisFileDirectory)System\Threading\Tasks\TaskScheduler.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)System\Threading\Tasks\TaskSchedulerException.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)System\Threading\Tasks\ThreadPoolTaskScheduler.cs" />
+    <Compile Include="$(MSBuildThisFileDirectory)System\Threading\Tasks\TplEtwProvider.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)System\Threading\Tasks\ValueTask.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)System\Threading\Tasks\Sources\ManualResetValueTaskSourceCore.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)System\Threading\Tasks\Sources\IValueTaskSource.cs" />

src/System.Private.CoreLib/src/System/Threading/Tasks/TPLETWProvider.cs renamed to src/System.Private.CoreLib/shared/System/Threading/Tasks/TplEtwProvider.cs

@@ -2,30 +2,20 @@
 // The .NET Foundation licenses this file to you under the MIT license.
 // See the LICENSE file in the project root for more information.
 
-// =+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+
-//
-//
-//
-// EventSource for TPL.
-//
-// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
-
-using System;
-using System.Collections.Generic;
-using System.Text;
-using System.Security;
 using System.Runtime.CompilerServices;
 using System.Diagnostics.Tracing;
-
 using Internal.Runtime.CompilerServices;
 
 namespace System.Threading.Tasks
 {
     /// <summary>Provides an event source for tracing TPL information.</summary>
     [EventSource(
         Name = "System.Threading.Tasks.TplEventSource",
-        Guid = "2e5dba47-a3d2-4d16-8ee0-6671ffdcd7b5",
-        LocalizationResources = "FxResources.System.Private.CoreLib.SR")]
+        Guid = "2e5dba47-a3d2-4d16-8ee0-6671ffdcd7b5"
+#if CORECLR
+        ,LocalizationResources = "FxResources.System.Private.CoreLib.SR"
+#endif
+        )]
     internal sealed class TplEtwProvider : EventSource
     {
         /// Used to determine if tasks should generate Activity IDs for themselves