Remove specialized GC logic in Roslyn (#77628)

Intended to send through speedometer.

Build:
https://devdiv.visualstudio.com/DevDiv/_build/results?buildId=11202294&view=results

Author: CyrusNajmabadi

src/VisualStudio/Core/Def/Implementation/AbstractOleCommandTarget.Execute.cs

@@ -35,10 +35,6 @@ public virtual int Exec(ref Guid pguidCmdGroup, uint commandId, uint executeInfo
             {
                 return ExecuteVisualStudio2000(ref pguidCmdGroup, commandId, executeInformation, pvaIn, pvaOut);
             }
-            else if (pguidCmdGroup == VSConstants.GUID_VSStandardCommandSet97)
-            {
-                return ExecuteVisualStudio97(ref pguidCmdGroup, commandId, executeInformation, pvaIn, pvaOut);
-            }
             else
             {
                 return NextCommandTarget.Exec(ref pguidCmdGroup, commandId, executeInformation, pvaIn, pvaOut);
@@ -50,61 +46,8 @@ public virtual int Exec(ref Guid pguidCmdGroup, uint commandId, uint executeInfo
         }
     }
 
-    private int ExecuteVisualStudio97(ref Guid pguidCmdGroup, uint commandId, uint executeInformation, IntPtr pvaIn, IntPtr pvaOut)
-    {
-        switch ((VSConstants.VSStd97CmdID)commandId)
-        {
-            case VSConstants.VSStd97CmdID.Paste:
-            case VSConstants.VSStd97CmdID.Delete:
-            case VSConstants.VSStd97CmdID.SelectAll:
-            case VSConstants.VSStd97CmdID.Undo:
-            case VSConstants.VSStd97CmdID.Redo:
-            case VSConstants.VSStd97CmdID.MultiLevelUndo:
-            case VSConstants.VSStd97CmdID.MultiLevelRedo:
-                GCManager.UseLowLatencyModeForProcessingUserInput();
-                return NextCommandTarget.Exec(ref pguidCmdGroup, commandId, executeInformation, pvaIn, pvaOut);
-
-            default:
-                return NextCommandTarget.Exec(ref pguidCmdGroup, commandId, executeInformation, pvaIn, pvaOut);
-        }
-    }
-
     protected virtual int ExecuteVisualStudio2000(ref Guid pguidCmdGroup, uint commandId, uint executeInformation, IntPtr pvaIn, IntPtr pvaOut)
     {
-        switch ((VSConstants.VSStd2KCmdID)commandId)
-        {
-            case VSConstants.VSStd2KCmdID.TYPECHAR:
-            case VSConstants.VSStd2KCmdID.RETURN:
-            case VSConstants.VSStd2KCmdID.TAB:
-            case VSConstants.VSStd2KCmdID.BACKTAB:
-            case VSConstants.VSStd2KCmdID.HOME:
-            case VSConstants.VSStd2KCmdID.END:
-            case VSConstants.VSStd2KCmdID.BOL:
-            case VSConstants.VSStd2KCmdID.BOL_EXT:
-            case VSConstants.VSStd2KCmdID.EOL:
-            case VSConstants.VSStd2KCmdID.EOL_EXT:
-            case VSConstants.VSStd2KCmdID.SELECTALL:
-            case VSConstants.VSStd2KCmdID.OPENLINEABOVE:
-            case VSConstants.VSStd2KCmdID.OPENLINEBELOW:
-            case VSConstants.VSStd2KCmdID.UP:
-            case VSConstants.VSStd2KCmdID.DOWN:
-            case VSConstants.VSStd2KCmdID.BACKSPACE:
-            case VSConstants.VSStd2KCmdID.DELETE:
-            case VSConstants.VSStd2KCmdID.ECMD_INSERTCOMMENT:
-            case VSConstants.VSStd2KCmdID.COMPLETEWORD:
-            case VSConstants.VSStd2KCmdID.SHOWMEMBERLIST:
-            case VSConstants.VSStd2KCmdID.PARAMINFO:
-            case VSConstants.VSStd2KCmdID.RENAME:
-            case VSConstants.VSStd2KCmdID.EXTRACTINTERFACE:
-            case VSConstants.VSStd2KCmdID.EXTRACTMETHOD:
-            case VSConstants.VSStd2KCmdID.PASTE:
-            case VSConstants.VSStd2KCmdID.INSERTSNIPPET:
-            case VSConstants.VSStd2KCmdID.SURROUNDWITH:
-                GCManager.UseLowLatencyModeForProcessingUserInput();
-                return NextCommandTarget.Exec(ref pguidCmdGroup, commandId, executeInformation, pvaIn, pvaOut);
-
-            default:
-                return NextCommandTarget.Exec(ref pguidCmdGroup, commandId, executeInformation, pvaIn, pvaOut);
-        }
+        return NextCommandTarget.Exec(ref pguidCmdGroup, commandId, executeInformation, pvaIn, pvaOut);
     }
 }

src/VisualStudio/Core/Def/Implementation/GCManager.cs

@@ -96,8 +96,6 @@ internal abstract partial class VisualStudioWorkspaceImpl : VisualStudioWorkspac
     /// </summary>
     private readonly Dictionary<string, UIContext?> _languageToProjectExistsUIContext = [];
 
-    private VirtualMemoryNotificationListener? _memoryListener;
-
     private OpenFileTracker? _openFileTracker;
     internal IFileChangeWatcher FileChangeWatcher { get; }
 
@@ -195,15 +193,13 @@ public async Task InitializeUIAffinitizedServicesAsync(IAsyncServiceProvider asy
         solutionClosingContext.UIContextChanged += (_, e) => ProjectSystemProjectFactory.SolutionClosing = e.Activated;
 
         var openFileTracker = await OpenFileTracker.CreateAsync(this, ProjectSystemProjectFactory, asyncServiceProvider).ConfigureAwait(true);
-        var memoryListener = await VirtualMemoryNotificationListener.CreateAsync(this, _threadingContext, asyncServiceProvider, _globalOptions, _threadingContext.DisposalToken).ConfigureAwait(true);
 
         // Update our fields first, so any asynchronous work that needs to use these is able to see the service.
         // WARNING: if we do .ConfigureAwait(true) here, it means we're trying to transition to the UI thread while
         // semaphore is acquired; if the UI thread is blocked trying to acquire the semaphore, we could deadlock.
         using (await _gate.DisposableWaitAsync().ConfigureAwait(false))
         {
             _openFileTracker = openFileTracker;
-            _memoryListener = memoryListener;
         }
 
         await _threadingContext.JoinableTaskFactory.SwitchToMainThreadAsync(_threadingContext.DisposalToken);