Refactor ChooserDialogView to use borders instead of content margins.

chrome/browser/ui/views/constrained_web_dialog_delegate_views.cc

Index: chrome/browser/ui/views/constrained_web_dialog_delegate_views.cc
diff --git a/chrome/browser/ui/views/constrained_web_dialog_delegate_views.cc b/chrome/browser/ui/views/constrained_web_dialog_delegate_views.cc
index e9d7fe434813a1fe3c0f65615b75dc6dfa8afe46..18af0d7693f78477acadef87f8a951f7725b15f4 100644
--- a/chrome/browser/ui/views/constrained_web_dialog_delegate_views.cc
+++ b/chrome/browser/ui/views/constrained_web_dialog_delegate_views.cc
@@ -214,7 +214,7 @@ class ConstrainedWebDialogDelegateViewViews
   views::View* GetContentsView() override { return this; }
   views::NonClientFrameView* CreateNonClientFrameView(
       views::Widget* widget) override {
-    return views::DialogDelegate::CreateDialogFrameView(widget, gfx::Insets());
+    return views::DialogDelegate::CreateDialogFrameView(widget);
   }
   bool ShouldShowCloseButton() const override {
     // No close button if the dialog doesn't want a title bar.