Load the actual app icon in Athena.

extensions/common/common_manifest_handlers.cc

Index: extensions/common/common_manifest_handlers.cc
diff --git a/extensions/common/common_manifest_handlers.cc b/extensions/common/common_manifest_handlers.cc
index c92c7463ecc00a1f23a23063d6e41e1d9e40df7a..b2f01e76166a2ad1e6c606f2b9addb8235f01b12 100644
--- a/extensions/common/common_manifest_handlers.cc
+++ b/extensions/common/common_manifest_handlers.cc
@@ -8,6 +8,7 @@
 #include "extensions/common/manifest_handlers/background_info.h"
 #include "extensions/common/manifest_handlers/csp_info.h"
 #include "extensions/common/manifest_handlers/file_handler_info.h"
+#include "extensions/common/manifest_handlers/icons_handler.h"
 #include "extensions/common/manifest_handlers/incognito_info.h"
 #include "extensions/common/manifest_handlers/kiosk_mode_info.h"
 #include "extensions/common/manifest_handlers/offline_enabled_info.h"
@@ -24,6 +25,7 @@ void RegisterCommonManifestHandlers() {
   (new CSPHandler(false))->Register();
   (new CSPHandler(true))->Register();
   (new FileHandlersParser)->Register();
+  (new IconsHandler)->Register();
   (new IncognitoHandler)->Register();
   (new KioskModeHandler)->Register();
   (new OfflineEnabledHandler)->Register();