[UI Cocoa] Hide the global error bubble icon from accessibility

chrome/browser/ui/cocoa/website_settings/website_settings_bubble_controller.mm

Index: chrome/browser/ui/cocoa/website_settings/website_settings_bubble_controller.mm
diff --git a/chrome/browser/ui/cocoa/website_settings/website_settings_bubble_controller.mm b/chrome/browser/ui/cocoa/website_settings/website_settings_bubble_controller.mm
index 23152e0571b63dcc83e1cd5ea6007143b4fb267c..2672654e09296ae44490e9a605bd51a65eaf79b5 100644
--- a/chrome/browser/ui/cocoa/website_settings/website_settings_bubble_controller.mm
+++ b/chrome/browser/ui/cocoa/website_settings/website_settings_bubble_controller.mm
@@ -37,6 +37,7 @@
 #include "extensions/common/constants.h"
 #include "skia/ext/skia_utils_mac.h"
 #import "third_party/google_toolbox_for_mac/src/AppKit/GTMUILocalizerAndLayoutTweaker.h"
+#import "ui/base/cocoa/a11y_util.h"
 #include "ui/base/cocoa/cocoa_base_utils.h"
 #import "ui/base/cocoa/controls/hyperlink_button_cell.h"
 #import "ui/base/cocoa/flipped_view.h"
@@ -613,21 +614,12 @@ bool IsInternalURL(const GURL& url) {
   NSRect frame = NSMakeRect(point.x, point.y, size.width, size.height);
   base::scoped_nsobject<NSImageView> imageView(
       [[NSImageView alloc] initWithFrame:frame]);
-  [self hideImageFromAccessibilityOrder:imageView];
+  ui::a11y_util::HideImageFromAccessibilityOrder(imageView);
   [imageView setImageFrameStyle:NSImageFrameNone];
   [view addSubview:imageView.get()];
   return imageView.get();
 }
 
-// Hide the given image view from the accessibility order for VoiceOver.
-- (void)hideImageFromAccessibilityOrder:(NSImageView*)imageView {
-  // This is the minimum change necessary to get VoiceOver to skip the image
-  // (instead of reading the word "image"). Accessibility mechanisms in OSX
-  // change once in a while, so this may be fragile.
-  [[imageView cell] accessibilitySetOverrideValue:@""
-                                     forAttribute:NSAccessibilityRoleAttribute];
-}
-
 // Add a separator as a subview of the given view. Return the new view.
 - (NSView*)addSeparatorToView:(NSView*)view {
   // Use an arbitrary position; it will be adjusted in performLayout.