intermediate cleanup

src/VisualStudio/Core/Def/Implementation/ChangeSignature/AddParameterDialog.xaml

@@ -40,7 +40,7 @@
                 <ColumnDefinition Width="400" />
             </Grid.ColumnDefinitions>
             <Label Grid.Row="0" Grid.Column="0" Content="{Binding ElementName=dialog, Path=TypeNameLabel}" />
-            <Border Grid.Row="0" Grid.Column="1" BorderThickness="1" Margin="6,0,0,0">
                <changesignature:IntellisenseTextBlock x:Name="TypeNameTextBox" Width="300" Focusable="True" />
            </Border>
+            <Border Grid.Row="0" Grid.Column="1" BorderThickness="1" Margin="6,0,0,0">
                <ContentControl x:Name="TypeNameContentControl" Width="300" Focusable="True" />
            </Border>
             <Label Grid.Row="1" Grid.Column="0" Content="{Binding ElementName=dialog, Path=ParameterNameLabel}" />
             <TextBox Grid.Row="1" Grid.Column="1" Width="200" Text="{Binding ParameterName}" />
             <Label Grid.Row="2" Grid.Column="0" Content="{Binding ElementName=dialog, Path=CallsiteValueLabel}" />

src/VisualStudio/Core/Def/Implementation/ChangeSignature/AddParameterDialog.xaml.cs

@@ -45,9 +45,9 @@ internal partial class AddParameterDialog : DialogWindow
 
         private void AddParameterDialog_Loaded(object sender, RoutedEventArgs e)
         {
-            this.TypeNameTextBox.TextBuffer = _textBuffer;
-            this.TypeNameTextBox.TextView = _textView;
-            this.TypeNameTextBox.WpfTextView = _wpfTextView;
+            IntellisenseTextBox typeNameTextBox = new IntellisenseTextBox(
+                _textBuffer as IVsTextLines, _textView, _wpfTextView, TypeNameContentControl);
+            this.TypeNameContentControl.Content = typeNameTextBox;
         }
 
         private void OK_Click(object sender, RoutedEventArgs e)

src/VisualStudio/Core/Def/Implementation/ChangeSignature/DependencyObjectExtensions.cs → src/VisualStudio/Core/Def/Implementation/Utilities/DependencyObjectExtensions.cs

@@ -3,9 +3,8 @@
 using System.Windows;
 using System.Windows.Media;
 
-namespace Microsoft.VisualStudio.LanguageServices.Implementation.ChangeSignature
+namespace Microsoft.VisualStudio.LanguageServices.Implementation
 {
-    // TODO move to utilities
     internal static class DependencyObjectExtensions
     {
         public static DependencyObject TryGetParent(this DependencyObject obj)

src/VisualStudio/Core/Def/Implementation/ChangeSignature/ElisionBufferTextViewModel.cs → src/VisualStudio/Core/Def/Implementation/Utilities/ElisionBufferTextViewModel.cs

@@ -5,7 +5,7 @@
 using Microsoft.VisualStudio.Text.Projection;
 using Microsoft.VisualStudio.Utilities;
 
-namespace Microsoft.VisualStudio.LanguageServices.Implementation.ChangeSignature
+namespace Microsoft.VisualStudio.LanguageServices.Implementation
 {
     internal class ElisionBufferTextViewModel : ITextViewModel
     {