[ios] Uses the local Card icon for Save Card banner.

Bug: 1032624
Change-Id: I0a4edcbf26806da4448e2aa102df5b988c896711
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1970088Reviewed-by: Chris Lu <thegreenfrog@chromium.org>
Commit-Queue: Sergio Collazos <sczs@chromium.org>
Cr-Commit-Position: refs/heads/master@{#726037}

ios/chrome/browser/ui/infobars/coordinators/infobar_save_card_coordinator.mm

@@ -79,9 +79,8 @@
     [self.bannerViewController
         setSubtitleText:base::SysUTF16ToNSString(
                             self.saveCardInfoBarDelegate->card_label())];
-    gfx::Image icon = self.saveCardInfoBarDelegate->GetIcon();
-    if (!icon.IsEmpty())
-      [self.bannerViewController setIconImage:icon.ToUIImage()];
+    self.bannerViewController.iconImage =
+        [UIImage imageNamed:@"infobar_save_card_icon"];
   }
 }