Add accessibility ID to the icon next to autosuggest drop down for iPads.

ios/chrome/browser/ui/omnibox/omnibox_popup_material_row.mm

Index: ios/chrome/browser/ui/omnibox/omnibox_popup_material_row.mm
diff --git a/ios/chrome/browser/ui/omnibox/omnibox_popup_material_row.mm b/ios/chrome/browser/ui/omnibox/omnibox_popup_material_row.mm
index 42d4a3af7d0aadd510d6c52e9034e158c490981f..42d63170b6377d901c5f9eebf07aeaa8414dd208 100644
--- a/ios/chrome/browser/ui/omnibox/omnibox_popup_material_row.mm
+++ b/ios/chrome/browser/ui/omnibox/omnibox_popup_material_row.mm
@@ -125,6 +125,9 @@ const CGFloat kAppendButtonSize = 48.0;
 - (void)updateLeadingImage:(int)imageID {
   _imageView.image = NativeImage(imageID);
 
+  _imageView.accessibilityIdentifier =
+      [NSString stringWithFormat:@"leading image id %d", imageID];
+
   // Adjust the vertical position based on the current size of the row.
   CGRect frame = _imageView.frame;
   frame.origin.y = floor((_rowHeight - kImageDimensionLength) / 2);