DialogBrowserTest implementation to invoke Content settings bubble dialogs.

chrome/browser/ui/views/location_bar/location_bar_view.cc

Index: chrome/browser/ui/views/location_bar/location_bar_view.cc
diff --git a/chrome/browser/ui/views/location_bar/location_bar_view.cc b/chrome/browser/ui/views/location_bar/location_bar_view.cc
index a37de8a5213311b147b0baffddc3d5117ff634b2..789fb08fcdb4850d9ee6380e19f952ad3c77d123 100644
--- a/chrome/browser/ui/views/location_bar/location_bar_view.cc
+++ b/chrome/browser/ui/views/location_bar/location_bar_view.cc
@@ -1074,6 +1074,15 @@ bool LocationBarView::GetBookmarkStarVisibility() {
   return star_view_->visible();
 }
 
+bool LocationBarView::TestContentSettingImagePressed(size_t index) {
+  if (index >= content_setting_views_.size())
+    return false;
+
+  content_setting_views_[index]->OnKeyPressed(
+      ui::KeyEvent(ui::ET_KEY_PRESSED, ui::VKEY_SPACE, ui::EF_NONE));
+  return true;
+}
+
 ////////////////////////////////////////////////////////////////////////////////
 // LocationBarView, private views::View implementation: