DialogBrowserTest implementation to invoke Content settings bubble dialogs.

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 343593778a2e9a9ea91f5e5583def6e05f2c8f91..8635cc0bb9ee7a59c185373a228156eb493e40e1 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
@@ -83,6 +83,7 @@ class LocationBarViewMac : public LocationBar,
   ExtensionAction* GetVisiblePageAction(size_t index) override;
   void TestPageActionPressed(size_t index) override;
   bool GetBookmarkStarVisibility() override;
+  bool TestContentSettingImagePressed(size_t index) override;
 
   // Set/Get the editable state of the field.
   void SetEditable(bool editable);