Draw the separator on the trailing edge, not the leading.

Bug: 1116923
Change-Id: If673d845c54639a64ae59802f3fbcbf51a842632
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2376685
Auto-Submit: Peter Kasting <pkasting@chromium.org>
Commit-Queue: David Trainor <dtrainor@chromium.org>
Reviewed-by: David Trainor <dtrainor@chromium.org>
Cr-Commit-Position: refs/heads/master@{#801874}

chrome/browser/ui/views/download/download_item_view.cc

@@ -561,7 +561,7 @@ void DownloadItemView::OnPaintBackground(gfx::Canvas* canvas) {
 
   // Draw the separator as part of the background. It will be covered by the
   // focus ring when the view has focus.
-  gfx::Rect rect(0, 0, 1, height());
+  gfx::Rect rect(width() - 1, 0, 1, height());
   rect.Inset(0, kTopBottomPadding);
   canvas->FillRect(GetMirroredRect(rect),
                    GetThemeProvider()->GetColor(