Adds the source ImageLoadingTracker to OnImageLoaded. I need this in a

chrome/browser/gtk/location_bar_view_gtk.cc

Index: chrome/browser/gtk/location_bar_view_gtk.cc
diff --git a/chrome/browser/gtk/location_bar_view_gtk.cc b/chrome/browser/gtk/location_bar_view_gtk.cc
index dabdf18bfd1fcc2d386d5c9284b76452bab30741..52976dcbedb24f7c075f55fc7dfb627bc086b44f 100644
--- a/chrome/browser/gtk/location_bar_view_gtk.cc
+++ b/chrome/browser/gtk/location_bar_view_gtk.cc
@@ -1164,8 +1164,8 @@ void LocationBarViewGtk::PageActionViewGtk::UpdateVisibility(
   }
 }
 
-void LocationBarViewGtk::PageActionViewGtk::OnImageLoaded(SkBitmap* image,
-                                                          size_t index) {
+void LocationBarViewGtk::PageActionViewGtk::OnImageLoaded(
+    ImageLoadingTracker* source, SkBitmap* image, size_t index) {
   // We loaded icons()->size() icons, plus one extra if the page action had
   // a default icon.
   size_t total_icons = page_action_->icon_paths()->size();