Load 2x resources on demand

chrome/browser/web_applications/web_app_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.
 
 #import "chrome/browser/web_applications/web_app_mac.h"
 
 #import <Cocoa/Cocoa.h>
 
 #include "base/file_util.h"
 #include "base/mac/bundle_locations.h"
@@ skipping 180 matching lines @@
             forKey:app_mode::kCrAppModeExtensionPathKey];
   return [plist writeToFile:plist_path atomically:YES];
 }
 
 bool WebAppShortcutCreator::UpdateIcon(const FilePath& app_path) const {
   if (info_.favicon.IsEmpty())
     return true;
 
   scoped_nsobject<IconFamily> icon_family([[IconFamily alloc] init]);
   bool image_added = false;
+  info_.favicon.ToImageSkia()->EnsureRepsForSupportedScaleFactors();
   std::vector<gfx::ImageSkiaRep> image_reps =
-      info_.favicon.ToImageSkia()->GetRepresentations();
+      info_.favicon.ToImageSkia()->image_reps();
   for (size_t i = 0; i < image_reps.size(); ++i) {
     NSBitmapImageRep* image_rep = SkBitmapToImageRep(
         image_reps[i].sk_bitmap());
     if (!image_rep)
       continue;
 
     // Missing an icon size is not fatal so don't fail if adding the bitmap
     // doesn't work.
     if (!AddBitmapImageRepToIconFamily(icon_family, image_rep))
       continue;
@@ skipping 50 matching lines @@
 
 void DeletePlatformShortcuts(
     const FilePath& web_app_path,
     const ShellIntegration::ShortcutInfo& shortcut_info) {
   // TODO(benwells): Implement this when shortcuts / weblings are enabled on
   // mac.
 }
 
 }  // namespace internals
 }  // namespace web_app