Attempt to load component extension favicon from the resources first.

chrome/browser/ui/webui/extensions/extension_icon_source.h

Index: chrome/browser/ui/webui/extensions/extension_icon_source.h
===================================================================
--- chrome/browser/ui/webui/extensions/extension_icon_source.h	(revision 130900)
+++ chrome/browser/ui/webui/extensions/extension_icon_source.h	(working copy)
@@ -95,12 +95,6 @@
   // Loads the default image for |request_id| and returns to the client.
   void LoadDefaultImage(int request_id);
 
-  // Tries loading component extension image. These usually come from resources
-  // instead of file system. Returns false if a given |icon| does not have
-  // a corresponding image in bundled resources.
-  bool TryLoadingComponentExtensionImage(const ExtensionResource& icon,
-                                         int request_id);
-
   // Loads the extension's |icon| for the given |request_id| and returns the
   // image to the client.
   void LoadExtensionImage(const ExtensionResource& icon, int request_id);