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

chrome/browser/views/location_bar_view.cc

Index: chrome/browser/views/location_bar_view.cc
diff --git a/chrome/browser/views/location_bar_view.cc b/chrome/browser/views/location_bar_view.cc
index d657c0617ace0c384229454162a5b2b866f7d811..7f1986ea7560d56ab84f111786b12ba4e4e2f23f 100644
--- a/chrome/browser/views/location_bar_view.cc
+++ b/chrome/browser/views/location_bar_view.cc
@@ -1561,8 +1561,8 @@ void LocationBarView::PageActionImageView::ShowInfoBubble() {
   ShowInfoBubbleImpl(ASCIIToWide(tooltip_), GetColor(false, TEXT));
 }
 
-void LocationBarView::PageActionImageView::OnImageLoaded(SkBitmap* image,
-                                                         size_t index) {
+void LocationBarView::PageActionImageView::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();