Location bar: make decorations accessible

chrome/browser/ui/cocoa/toolbar/toolbar_controller.mm

 // Copyright (c) 2012 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/toolbar/toolbar_controller.h"
 
 #include <algorithm>
 
 #include "base/mac/bundle_locations.h"
 #include "base/mac/foundation_util.h"
@@ skipping 432 matching lines @@
   [forwardButton_ setHandleMiddleClick:YES];
   [reloadButton_ setHandleMiddleClick:YES];
   [homeButton_ setHandleMiddleClick:YES];
 
   [self initCommandStatus:commands_];
   [reloadButton_ setCommandUpdater:commands_];
 
   locationBarView_.reset(new LocationBarViewMac(locationBar_, commands_,
                                                 profile_, browser_));
   [locationBar_ setFont:[NSFont systemFontOfSize:14]];
+
+  // Add the location bar's accessibility views as direct subviews of the
+  // toolbar. They are logical children of the location bar, but the location
+  // bar's actual Cocoa control is an NSCell, so it cannot have child views.
+  // The |locationBarView_| is responsible for positioning the accessibility
+  // views.
+  std::vector<NSView*> accessibility_views =
+      locationBarView_->GetDecorationAccessibilityViews();
+  for (const auto& view : accessibility_views) {
+    [[self toolbarView] addSubview:view
+                        positioned:NSWindowAbove
+                        relativeTo:locationBar_];
+  }
+
   if (!isModeMaterial) {
     [locationBar_ setFont:[NSFont systemFontOfSize:[NSFont systemFontSize]]];
   }
 
   // Register pref observers for the optional home and page/options buttons
   // and then add them to the toolbar based on those prefs.
   PrefService* prefs = profile_->GetPrefs();
   showHomeButton_.Init(
       prefs::kShowHomeButton, prefs,
       base::Bind(
@@ skipping 692 matching lines @@
 - (void)hideDropURLsIndicatorInView:(NSView*)view {
   // Do nothing.
 }
 
 // (URLDropTargetController protocol)
 - (BOOL)isUnsupportedDropData:(id<NSDraggingInfo>)info {
   return drag_util::IsUnsupportedDropData(profile_, info);
 }
 
 @end