Location bar: make decorations accessible

chrome/browser/ui/cocoa/location_bar/location_bar_view_mac.h

Index: chrome/browser/ui/cocoa/location_bar/location_bar_view_mac.h
diff --git a/chrome/browser/ui/cocoa/location_bar/location_bar_view_mac.h b/chrome/browser/ui/cocoa/location_bar/location_bar_view_mac.h
index 651a099d67569a1ff6d7c27a07f9fa6df75edcbc..345eb2a1996b26736fa905d9c7e35a804ccce483 100644
--- a/chrome/browser/ui/cocoa/location_bar/location_bar_view_mac.h
+++ b/chrome/browser/ui/cocoa/location_bar/location_bar_view_mac.h
@@ -201,6 +201,11 @@ class LocationBarViewMac : public LocationBar,
   // Updates the view for the zoom icon when default zoom levels change.
   void OnDefaultZoomLevelChanged() override;
 
+  // Returns the decoration accessibility views for all of this
+  // LocationBarViewMac's decorations. The returned NSViews may not have been
+  // positioned yet.
+  std::vector<NSView*> GetDecorationAccessibilityViews();
+
  private:
   friend ZoomDecorationTest;
 
@@ -238,6 +243,15 @@ class LocationBarViewMac : public LocationBar,
   // Returns whether any updates were made.
   bool UpdateZoomDecoration(bool default_zoom_changed);
 
+  // Returns pointers to all of the LocationBarDecorations owned by this
+  // LocationBarViewMac. This helper function is used for positioning and
+  // re-positioning accessibility views.
+  std::vector<LocationBarDecoration*> GetDecorations();
+
+  // Updates |decoration|'s accessibility view's position to match the computed
+  // position the decoration will be drawn at.
+  void UpdateAccessibilityViewPosition(LocationBarDecoration* decoration);
+
   std::unique_ptr<OmniboxViewMac> omnibox_view_;
 
   AutocompleteTextField* field_;  // owned by tab controller