Load the resources for max scale factor first.

ui/base/resource/resource_bundle_mac.mm

 // 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 "ui/base/resource/resource_bundle.h"
 
 #import <AppKit/AppKit.h>
 
 #include "base/basictypes.h"
 #include "base/file_path.h"
@@ skipping 32 matching lines @@
     return FilePath(base::SysNSStringToUTF8(name) + ".pak");
   }
 
   return FilePath([resource_path fileSystemRepresentation]);
 }
 
 }  // namespace
 
 void ResourceBundle::LoadCommonResources() {
   AddDataPackFromPath(GetResourcesPakFilePath(@"chrome", nil),
-                      SCALE_FACTOR_100P);
+                      SCALE_FACTOR_NONE);
   AddDataPackFromPath(GetResourcesPakFilePath(@"chrome_100_percent",
                         nil), SCALE_FACTOR_100P);
   AddDataPackFromPath(GetResourcesPakFilePath(@"webkit_resources_100_percent",
                         nil), SCALE_FACTOR_100P);
 
   // On Mac we load 1x and 2x resources and we let the UI framework decide
   // which one to use.
   if (IsScaleFactorSupported(SCALE_FACTOR_200P)) {
     AddDataPackFromPath(GetResourcesPakFilePath(@"chrome_200_percent",
                           nil), SCALE_FACTOR_200P);
@@ skipping 86 matching lines @@
 
   // Another thread raced the load and has already cached the image.
   if (images_.count(resource_id))
     return images_[resource_id];
 
   images_[resource_id] = image;
   return images_[resource_id];
 }
 
 }  // namespace ui