Load 2x resources on demand

chrome/browser/ui/app_list/extension_app_item.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/app_list/extension_app_item.h"
 
 #include "base/utf_string_conversions.h"
 #include "chrome/browser/extensions/extension_prefs.h"
 #include "chrome/browser/extensions/extension_service.h"
 #include "chrome/browser/extensions/extension_system.h"
@@ skipping 163 matching lines @@
 void ExtensionAppItem::StartExtensionUninstall() {
   // ExtensionUninstall deletes itself when done or aborted.
   ExtensionUninstaller* uninstaller = new ExtensionUninstaller(profile_,
                                                                extension_id_);
   uninstaller->Run();
 }
 
 void ExtensionAppItem::OnImageLoaded(const gfx::Image& image,
                                      const std::string& extension_id,
                                      int tracker_index) {
-  if (!image.IsEmpty())
-    SetIcon(*image.ToImageSkia());
-  else
-    SetIcon(Extension::GetDefaultIcon(true /* is_app */));
+  if (!image.IsEmpty()) {
+    gfx::ImageSkia image_skia = *image.ToImageSkia();
+    image_skia.MakeThreadSafe();
+    SetIcon(image_skia);
+  } else {
+    gfx::ImageSkia image_skia(Extension::GetDefaultIcon(true /* is_app */));
+    image_skia.MakeThreadSafe();
+    SetIcon(image_skia);
+  }
 }
 
 bool ExtensionAppItem::IsItemForCommandIdDynamic(int command_id) const {
   return command_id == TOGGLE_PIN;
 }
 
 string16 ExtensionAppItem::GetLabelForCommandId(int command_id) const {
   if (command_id == TOGGLE_PIN) {
     return controller_->IsAppPinned(extension_id_) ?
         l10n_util::GetStringUTF16(IDS_APP_LIST_CONTEXT_MENU_UNPIN) :
@@ skipping 100 matching lines @@
         IDS_APP_CONTEXT_MENU_OPEN_MAXIMIZED);
     context_menu_model_->AddSeparator(ui::NORMAL_SEPARATOR);
     context_menu_model_->AddItemWithStringId(OPTIONS, IDS_NEW_TAB_APP_OPTIONS);
     context_menu_model_->AddItemWithStringId(DETAILS, IDS_NEW_TAB_APP_DETAILS);
     context_menu_model_->AddItemWithStringId(UNINSTALL,
                                              IDS_EXTENSIONS_UNINSTALL);
   }
 
   return context_menu_model_.get();
 }