Update the Windows iOS promotion to have the same width as the bubble that appears before it.

chrome/browser/ui/views/bookmarks/bookmark_bubble_view.cc

Index: chrome/browser/ui/views/bookmarks/bookmark_bubble_view.cc
diff --git a/chrome/browser/ui/views/bookmarks/bookmark_bubble_view.cc b/chrome/browser/ui/views/bookmarks/bookmark_bubble_view.cc
index 0e8c261e3a902436d472a5d049443203c147a18e..52f69ff5277e82cb1b3f0819d998b53ee794c69b 100644
--- a/chrome/browser/ui/views/bookmarks/bookmark_bubble_view.cc
+++ b/chrome/browser/ui/views/bookmarks/bookmark_bubble_view.cc
@@ -404,6 +404,7 @@ void BookmarkBubbleView::ApplyEdits() {
 #if defined(OS_WIN)
 void BookmarkBubbleView::ShowIOSPromotion() {
   DCHECK(!is_showing_ios_promotion_);
+  gfx::Rect bubble_bounds = GetBubbleBounds();
   RemoveChildView(bookmark_details_view_.get());
   is_showing_ios_promotion_ = true;
   ios_promo_view_ = new DesktopIOSPromotionBubbleView(
@@ -411,6 +412,7 @@ void BookmarkBubbleView::ShowIOSPromotion() {
   AddChildView(ios_promo_view_);
   GetWidget()->UpdateWindowIcon();
   GetWidget()->UpdateWindowTitle();
-  SizeToContents();
+  // Resize the bubble so it has the same width as the parent bubble.
+  ios_promo_view_->UpdateBubbleHeight(bubble_bounds);
 }
 #endif