Pass CancellationToken around

src/Features/Core/Portable/CodeRefactorings/MoveType/AbstractMoveTypeService.MoveTypeEditor.cs

@@ -177,7 +177,7 @@ private void AddPartialModifiersToTypeChain(DocumentEditor documentEditor)
                 foreach (var node in typeChain)
                 {
                     var symbol = (ITypeSymbol)State.SemanticDocument.SemanticModel.GetDeclaredSymbol(node, CancellationToken);
-                    if (!semanticFacts.IsPartial(symbol))
+                    if (!semanticFacts.IsPartial(symbol, CancellationToken))
                     {
                         documentEditor.SetModifiers(node, DeclarationModifiers.Partial);
                     }

src/Workspaces/CSharp/Portable/LanguageServices/CSharpSemanticFactsService.cs

@@ -263,10 +263,10 @@ public bool IsNameOfContext(SemanticModel semanticModel, int position, Cancellat
             return semanticModel.SyntaxTree.IsNameOfContext(position, semanticModel, cancellationToken);
         }
 
-        public bool IsPartial(ITypeSymbol typeSymbol)
+        public bool IsPartial(ITypeSymbol typeSymbol, CancellationToken cancellationToken)
         {
             var syntaxRefs = typeSymbol.DeclaringSyntaxReferences;
-            return syntaxRefs.Any(n => ((BaseTypeDeclarationSyntax)n.GetSyntax()).Modifiers.Any(SyntaxKind.PartialKeyword));
+            return syntaxRefs.Any(n => ((BaseTypeDeclarationSyntax)n.GetSyntax(cancellationToken)).Modifiers.Any(SyntaxKind.PartialKeyword));
         }
     }
 }

src/Workspaces/Core/Portable/LanguageServices/SemanticsFactsService/ISemanticFactsService.cs

@@ -93,6 +93,6 @@ internal interface ISemanticFactsService : ILanguageService
 
         bool IsAssignableTo(ITypeSymbol fromSymbol, ITypeSymbol toSymbol, Compilation compilation);
 
-        bool IsPartial(ITypeSymbol typeSymbol);
+        bool IsPartial(ITypeSymbol typeSymbol, CancellationToken cancellationToken);
     }
 }
\ No newline at end of file

src/Workspaces/VisualBasic/Portable/LanguageServices/VisualBasicSemanticFactsService.vb

@@ -248,11 +248,11 @@ Namespace Microsoft.CodeAnalysis.VisualBasic
             Return semanticModel.SyntaxTree.IsNamespaceDeclarationNameContext(position, cancellationToken)
         End Function
 
-        Public Function IsPartial(typeSymbol As ITypeSymbol) As Boolean Implements ISemanticFactsService.IsPartial
+        Public Function IsPartial(typeSymbol As ITypeSymbol, cancellationToken As CancellationToken) As Boolean Implements ISemanticFactsService.IsPartial
             Dim syntaxRefs = typeSymbol.DeclaringSyntaxReferences
             Return syntaxRefs.Any(
                 Function(n As SyntaxReference)
-                    Return DirectCast(n.GetSyntax(), TypeStatementSyntax).Modifiers.Any(SyntaxKind.PartialKeyword)
+                    Return DirectCast(n.GetSyntax(cancellationToken), TypeStatementSyntax).Modifiers.Any(SyntaxKind.PartialKeyword)
                 End Function)
         End Function
     End Class