Enables HiDPI favicon to be displayed in tab strip on CrOS

chrome/browser/favicon/favicon_tab_helper.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/favicon/favicon_tab_helper.h"
 
 #include "chrome/browser/favicon/favicon_handler.h"
 #include "chrome/browser/favicon/favicon_util.h"
 #include "chrome/browser/favicon/select_favicon_frames.h"
 #include "chrome/browser/history/history.h"
@@ skipping 180 matching lines @@
 
 void FaviconTabHelper::OnDidDownloadFavicon(
     int id,
     const GURL& image_url,
     bool errored,
     int requested_size,
     const std::vector<SkBitmap>& bitmaps) {
   // TODO: Possibly do bitmap selection in FaviconHandler, so that it can score
   // favicons better.
   std::vector<ui::ScaleFactor> scale_factors;
-#if defined(OS_MACOSX)
   scale_factors = ui::GetSupportedScaleFactors();
-#else
-  scale_factors.push_back(ui::SCALE_FACTOR_100P);  // TODO: Aura?
-#endif
   gfx::Image favicon(
       SelectFaviconFrames(bitmaps, scale_factors, requested_size));
   favicon_handler_->OnDidDownloadFavicon(id, image_url, errored, favicon);
   if (touch_icon_handler_.get())
     touch_icon_handler_->OnDidDownloadFavicon(id, image_url, errored, favicon);
 }