Clean up usings

Author: jcansdale

src/GitHub.VisualStudio.UI/Views/Dialog/GitHubDialogWindow.xaml

@@ -45,7 +45,10 @@
     </Window.Resources>
     <Window.ContentTemplate>
         <DataTemplate>
-            <Border MouseDown="Border_MouseDown" BorderThickness="1" BorderBrush="{DynamicResource {x:Static vs:EnvironmentColors.ToolWindowBorderBrushKey}}">
+            <Border MouseDown="Border_MouseDown"
+                    BorderThickness="1"
+                    Background="{DynamicResource {x:Static vs:EnvironmentColors.ToolWindowBackgroundBrushKey}}"
+                    BorderBrush="{DynamicResource {x:Static vs:EnvironmentColors.ToolWindowBorderBrushKey}}">
                 <DockPanel>
                     <!-- close button and padding -->
                     <shellControls:GlyphButton x:Uid="button_Close"

src/GitHub.VisualStudio.UI/Views/Dialog/GitHubDialogWindow.xaml.cs

@@ -1,4 +1,6 @@
 using System;
+using System.Windows;
+using System.Windows.Input;
 using GitHub.ViewModels.Dialog;
 using Microsoft.VisualStudio.PlatformUI;
 
@@ -16,12 +18,12 @@ public GitHubDialogWindow(IGitHubDialogWindowViewModel viewModel)
             InitializeComponent();
         }
 
-        void CloseButton_Click(object sender, System.Windows.RoutedEventArgs e)
+        void CloseButton_Click(object sender, RoutedEventArgs e)
         {
             Close();
         }
 
-        void Border_MouseDown(object sender, System.Windows.Input.MouseButtonEventArgs e)
+        void Border_MouseDown(object sender, MouseButtonEventArgs e)
         {
             DragMove();
         }