Delete panel metrics and define insets in terms of distance metrics.

chrome/browser/ui/views/extensions/chooser_dialog_view.cc

Index: chrome/browser/ui/views/extensions/chooser_dialog_view.cc
diff --git a/chrome/browser/ui/views/extensions/chooser_dialog_view.cc b/chrome/browser/ui/views/extensions/chooser_dialog_view.cc
index d17fdc59e69f39873adec6251db3b0b575a582dd..e20b62f8d325a5710ead51527254a428ecf7770e 100644
--- a/chrome/browser/ui/views/extensions/chooser_dialog_view.cc
+++ b/chrome/browser/ui/views/extensions/chooser_dialog_view.cc
@@ -89,8 +89,8 @@ views::NonClientFrameView* ChooserDialogView::CreateNonClientFrameView(
   // always be true.
   DCHECK(ShouldUseCustomFrame());
   return views::DialogDelegate::CreateDialogFrameView(
-      widget, gfx::Insets(ChromeLayoutProvider::Get()->GetDistanceMetric(
-                  DISTANCE_PANEL_CONTENT_MARGIN)));
+      widget, ChromeLayoutProvider::Get()->GetInsetsMetric(
+                  views::INSETS_BUBBLE_CONTENTS));
 }
 
 bool ChooserDialogView::Accept() {