Attempt to load component extension favicon from the resources first.

chrome/browser/extensions/image_loading_tracker.h

Index: chrome/browser/extensions/image_loading_tracker.h
===================================================================
--- chrome/browser/extensions/image_loading_tracker.h	(revision 130900)
+++ chrome/browser/extensions/image_loading_tracker.h	(working copy)
@@ -122,6 +122,13 @@
   void OnImageLoaded(SkBitmap* image, const ExtensionResource& resource,
                      const gfx::Size& original_size, int id, bool should_cache);
 
+  // Tries loading component extension image. These usually come from resources
+  // instead of file system. Returns NULL if a given |resource| does not have
+  // a corresponding image in bundled resources.
+  SkBitmap *TryLoadingComponentExtensionImage(
+      const Extension* extension,
+      const ExtensionResource& resource);
+
   // content::NotificationObserver method. If an extension is uninstalled while
   // we're waiting for the image we remove the entry from load_map_.
   virtual void Observe(int type,