Give Chrome Web Store app an icon in its manifest file.

chrome/browser/extensions/image_loading_tracker_unittest.cc

 // Copyright (c) 2012 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/extensions/image_loading_tracker.h"
 
 #include "base/json/json_file_value_serializer.h"
 #include "base/message_loop.h"
 #include "base/path_service.h"
 #include "chrome/common/chrome_notification_types.h"
@@ skipping 235 matching lines @@
 
   ExtensionResource resource =
       extension->GetIconResource(extension_misc::EXTENSION_ICON_BITTY,
                                  ExtensionIconSet::MATCH_EXACTLY);
 
 #if defined(FILE_MANAGER_EXTENSION)
   ImageLoadingTracker loader(this);
   int resource_id;
   ASSERT_EQ(true,
             loader.IsComponentExtensionResource(extension.get(),
-                                                resource,
-                                                resource_id));
+                                                resource.relative_path(),
+                                                &resource_id));
   ASSERT_EQ(IDR_FILE_MANAGER_ICON_16, resource_id);
 #endif
 }