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

chrome/browser/views/location_bar_view.cc

 // Copyright (c) 2010 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/views/location_bar_view.h"
 
 #if defined(OS_LINUX)
 #include <gtk/gtk.h>
 #endif
 
@@ skipping 1543 matching lines @@
     return;
   }
 
   ExecuteAction(button, false);  // inspect_with_devtools
 }
 
 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();
   if (!page_action_->default_icon_path().empty())
     total_icons++;
   DCHECK(index < total_icons);
 
   // Map the index of the loaded image back to its name. If we ever get an
   // index greater than the number of icons, it must be the default icon.
   if (image) {
@@ skipping 163 matching lines @@
         page_action_views_[i]->image_view()->ExecuteAction(kLeftMouseButton,
             false);  // inspect_with_devtools
         return;
       }
       ++current;
     }
   }
 
   NOTREACHED();
 }