cocoa: hide icon in permission bubble from a11y tree

chrome/browser/ui/cocoa/permission_bubble/permission_bubble_controller.mm

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #import "chrome/browser/ui/cocoa/permission_bubble/permission_bubble_controller.h"
 
 #include <algorithm>
 
 #include "base/mac/bind_objc_block.h"
 #include "base/macros.h"
@@ skipping 21 matching lines @@
 #include "chrome/browser/ui/page_info/permission_menu_model.h"
 #include "chrome/browser/ui/permission_bubble/permission_prompt.h"
 #include "chrome/common/pref_names.h"
 #include "chrome/grit/generated_resources.h"
 #include "components/prefs/pref_service.h"
 #include "components/strings/grit/components_strings.h"
 #include "components/url_formatter/elide_url.h"
 #include "content/public/browser/native_web_keyboard_event.h"
 #include "content/public/browser/user_metrics.h"
 #include "skia/ext/skia_utils_mac.h"
+#include "ui/base/cocoa/a11y_util.h"
 #include "ui/base/cocoa/cocoa_base_utils.h"
 #import "ui/base/cocoa/controls/hyperlink_text_view.h"
 #import "ui/base/cocoa/menu_controller.h"
 #include "ui/base/cocoa/window_size_constants.h"
 #include "ui/base/l10n/l10n_util_mac.h"
 #include "ui/base/models/simple_menu_model.h"
 #include "ui/gfx/color_palette.h"
 #include "ui/gfx/image/image_skia_util_mac.h"
 #include "ui/gfx/paint_vector_icon.h"
 #include "url/gurl.h"
@@ skipping 438 matching lines @@
 - (NSView*)labelForRequest:(PermissionRequest*)request {
   DCHECK(request);
   base::scoped_nsobject<NSView> permissionView(
       [[NSView alloc] initWithFrame:NSZeroRect]);
   base::scoped_nsobject<NSImageView> permissionIcon(
       [[NSImageView alloc] initWithFrame:NSZeroRect]);
   [permissionIcon
       setImage:NSImageFromImageSkia(gfx::CreateVectorIcon(
                    request->GetIconId(), 18, gfx::kChromeIconGrey))];
   [permissionIcon setFrameSize:kPermissionIconSize];
+  ui::a11y_util::HideImageFromAccessibilityOrder(permissionIcon);
   [permissionView addSubview:permissionIcon];
 
   base::scoped_nsobject<NSTextField> permissionLabel(
       [[NSTextField alloc] initWithFrame:NSZeroRect]);
   base::string16 label = request->GetMessageTextFragment();
   [permissionLabel setDrawsBackground:NO];
   [permissionLabel setBezeled:NO];
   [permissionLabel setEditable:NO];
   [permissionLabel setSelectable:NO];
   [permissionLabel
@@ skipping 136 matching lines @@
 }
 
 - (IBAction)cancel:(id)sender {
   // This is triggered by ESC when the bubble has focus.
   if (delegate_)
     delegate_->Closing();
   [super cancel:sender];
 }
 
 @end  // implementation PermissionBubbleController