Make FixAllCodeAction a private type inside FixAllSuggestedAction.

src/EditorFeatures/Core/EditorFeatures.csproj

@@ -278,6 +278,7 @@
     <Compile Include="Implementation\Structure\AbstractStructureTaggerProvider.cs" />
     <Compile Include="Implementation\Preview\DifferenceViewerPreview.cs" />
     <Compile Include="Implementation\Preview\PreviewReferenceHighlightingTaggerProvider.cs" />
+    <Compile Include="Implementation\Suggestions\FixAllSuggestedAction.FixAllCodeAction.cs" />
     <Compile Include="Implementation\Suggestions\FixMultipleOccurrencesService.cs" />
     <Compile Include="Implementation\GoToImplementation\GoToImplementationCommandHandler.cs" />
     <Compile Include="Implementation\TodoComment\ITodoListProvider.cs" />

src/EditorFeatures/Core/Implementation/Suggestions/FixAllSuggestedAction.FixAllCodeAction.cs

+// Copyright (c) Microsoft.  All Rights Reserved.  Licensed under the Apache License, Version 2.0.  See License.txt in the project root for license information.
+
+using System;
+using Microsoft.CodeAnalysis.CodeFixes;
+
+namespace Microsoft.CodeAnalysis.Editor.Implementation.Suggestions
+{
+    internal partial class FixAllSuggestedAction
+    {
+        private sealed partial class FixAllCodeAction : FixSomeCodeAction
+        {
+            public FixAllCodeAction(FixAllState fixAllState)
+                : base(fixAllState, showPreviewChangesDialog: true)
+            {
+            }
+
+            public override string Title
+            {
+                get
+                {
+                    switch (this.FixAllState.Scope)
+                    {
+                        case FixAllScope.Document:
+                            return FeaturesResources.Document;
+                        case FixAllScope.Project:
+                            return FeaturesResources.Project;
+                        case FixAllScope.Solution:
+                            return FeaturesResources.Solution;
+                        default:
+                            throw new NotSupportedException();
+                    }
+                }
+            }
+
+            internal override string Message => FeaturesResources.Computing_fix_all_occurrences_code_fix;
+        }
+    }
+}
\ No newline at end of file

src/EditorFeatures/Core/Implementation/Suggestions/FixAllSuggestedAction.cs

@@ -18,7 +18,7 @@ namespace Microsoft.CodeAnalysis.Editor.Implementation.Suggestions
     /// <summary>
     /// Suggested action for fix all occurrences code fix.
     /// </summary>
-    internal sealed class FixAllSuggestedAction : SuggestedAction, ITelemetryDiagnosticID<string>
+    internal sealed partial class FixAllSuggestedAction : SuggestedAction, ITelemetryDiagnosticID<string>
     {
         private readonly Diagnostic _fixedDiagnostic;
 
@@ -27,11 +27,12 @@ internal sealed class FixAllSuggestedAction : SuggestedAction, ITelemetryDiagnos
             ITextBuffer subjectBuffer,
             ICodeActionEditHandlerService editHandler,
             IWaitIndicator waitIndicator,
-            FixAllCodeAction codeAction,
-            FixAllProvider provider,
+            FixAllState fixAllState,
             Diagnostic originalFixedDiagnostic,
             IAsynchronousOperationListener operationListener)
-            : base(workspace, subjectBuffer, editHandler, waitIndicator, codeAction, provider, operationListener)
+            : base(workspace, subjectBuffer, editHandler, waitIndicator,
+                  new FixAllCodeAction(fixAllState), fixAllState.FixAllProvider,
+                  operationListener)
         {
             _fixedDiagnostic = originalFixedDiagnostic;
         }

src/EditorFeatures/Core/Implementation/Suggestions/SuggestedActionsSourceProvider.cs

@@ -464,10 +464,11 @@ private IEnumerable<SuggestedActionSet> OrganizeFixes(Workspace workspace, IEnum
                 foreach (var scope in supportedScopes)
                 {
                     var fixAllStateForScope = fixAllState.WithScopeAndEquivalenceKey(scope, action.EquivalenceKey);
-                    var fixAllAction = new FixAllCodeAction(fixAllStateForScope);
+
                     var fixAllSuggestedAction = new FixAllSuggestedAction(
-                        workspace, subjectBuffer, editHandler, waitIndicator, fixAllAction,
-                        fixAllStateForScope.FixAllProvider, firstDiagnostic, operationListener);
+                        workspace, subjectBuffer, editHandler, waitIndicator, 
+                        fixAllStateForScope, firstDiagnostic, operationListener);
+
                     fixAllSuggestedActions.Add(fixAllSuggestedAction);
                 }
 

src/Features/Core/Portable/CodeFixes/FixAllOccurrences/FixAllCodeAction.cs

-// Copyright (c) Microsoft.  All Rights Reserved.  Licensed under the Apache License, Version 2.0.  See License.txt in the project root for license information.
-
-using System;
-
-namespace Microsoft.CodeAnalysis.CodeFixes
-{
-    internal sealed partial class FixAllCodeAction : FixSomeCodeAction
-    {
-        public FixAllCodeAction(FixAllState fixAllState) 
-            : base(fixAllState, showPreviewChangesDialog: true)
-        {
-        }
-
-        public override string Title
-        {
-            get
-            {
-                switch (this.FixAllState.Scope)
-                {
-                    case FixAllScope.Document:
-                        return FeaturesResources.Document;
-                    case FixAllScope.Project:
-                        return FeaturesResources.Project;
-                    case FixAllScope.Solution:
-                        return FeaturesResources.Solution;
-                    default:
-                        throw new NotSupportedException();
-                }
-            }
-        }
-
-        internal override string Message => FeaturesResources.Computing_fix_all_occurrences_code_fix;
-    }
-}

src/Features/Core/Portable/Features.csproj

@@ -159,7 +159,6 @@
     <Compile Include="AddImport\SymbolResult.cs" />
     <Compile Include="CodeFixes\CodeFixContextExtensions.cs" />
     <Compile Include="CodeFixes\FixAllOccurrences\FixMultipleCodeAction.cs" />
-    <Compile Include="CodeFixes\FixAllOccurrences\FixAllCodeAction.cs" />
     <Compile Include="AddImport\AbstractAddImportCodeFixProvider.cs" />
     <Compile Include="CodeFixes\Async\AbstractAddAwaitCodeFixProvider.cs" />
     <Compile Include="CodeFixes\Async\AbstractChangeToAsyncCodeFixProvider.cs" />