Fix the misalignment on CrOS of the tab background images

chrome/browser/ui/views/theme_image_mapper_aura_win.cc

 // Copyright (c) 2013 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/ui/views/theme_image_mapper.h"
 
 #include "grit/theme_resources.h"
 
 namespace chrome {
 
@@ skipping 11 matching lines @@
     case IDR_THEME_FRAME_INACTIVE:
       return IDR_THEME_FRAME_INACTIVE_WIN;
     case IDR_THEME_FRAME_INCOGNITO:
       return IDR_THEME_FRAME_INCOGNITO_WIN;
     case IDR_THEME_FRAME_INCOGNITO_INACTIVE:
       return IDR_THEME_FRAME_INCOGNITO_INACTIVE_WIN;
     case IDR_THEME_TAB_BACKGROUND:
       return IDR_THEME_TAB_BACKGROUND_WIN;
     case IDR_THEME_TAB_BACKGROUND_INCOGNITO:
       return IDR_THEME_TAB_BACKGROUND_INCOGNITO_WIN;
+    case IDR_THEME_TAB_BACKGROUND_OVERLAY:
+      return IDR_THEME_TAB_BACKGROUND_OVERLAY_WIN;
+    case IDR_THEME_TAB_BACKGROUND_INCOGNITO_OVERLAY:
+      return IDR_THEME_TAB_BACKGROUND_INCOGNITO_OVERLAY_WIN;
     case IDR_THEME_TOOLBAR:
       return IDR_THEME_TOOLBAR_WIN;
     default:
       break;
   }
   return resource;
 }
 
 }  // namespace chrome