Load the resources for max scale factor first.

chrome/browser/ui/webui/favicon_source.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/ui/webui/favicon_source.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "chrome/browser/favicon/favicon_service_factory.h"
 #include "chrome/browser/history/top_sites.h"
@@ skipping 29 matching lines @@
       history::TOUCH_PRECOMPOSED_ICON | history::TOUCH_ICON |
       history::FAVICON;
 }
 
 void FaviconSource::StartDataRequest(const std::string& path,
                                      bool is_incognito,
                                      int request_id) {
   FaviconService* favicon_service =
       FaviconServiceFactory::GetForProfile(profile_, Profile::EXPLICIT_ACCESS);
   if (!favicon_service || path.empty()) {
-    SendDefaultResponse(IconRequest(request_id, 16, ui::SCALE_FACTOR_NONE));
+    SendDefaultResponse(IconRequest(request_id, 16, ui::SCALE_FACTOR_100P));
     return;
   }
 
   int size_in_dip = gfx::kFaviconSize;
-  ui::ScaleFactor scale_factor = ui::SCALE_FACTOR_NONE;
+  ui::ScaleFactor scale_factor = ui::SCALE_FACTOR_100P;
 
   FaviconService::Handle handle;
   if (path.size() > 8 &&
       (path.substr(0, 8) == "iconurl/" || path.substr(0, 8) == "iconurl@")) {
     size_t prefix_length = 8;
     // Optional scale factor appended to iconurl, which may be @1x or @2x.
     if (path.at(7) == '@') {
         size_t slash = path.find("/");
         std::string scale_str = path.substr(8, slash - 8);
         web_ui_util::ParseScaleFactor(scale_str, &scale_factor);
@@ skipping 127 matching lines @@
 
   if (!default_favicon) {
     ui::ScaleFactor scale_factor = icon_request.scale_factor;
     default_favicon = ResourceBundle::GetSharedInstance()
         .LoadDataResourceBytesForScale(resource_id, scale_factor);
     default_favicons_[favicon_index] = default_favicon;
   }
 
   SendResponse(icon_request.request_id, default_favicon);
 }