MD History: Add lazy-render element for simple lazy initialization.

chrome/browser/ui/webui/md_history_ui.cc

 // Copyright 2015 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/md_history_ui.h"
 
 #include "base/command_line.h"
 #include "build/build_config.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/signin/signin_manager_factory.h"
@@ skipping 127 matching lines @@
   source->AddResourcePath("history_toolbar.html",
                           IDR_MD_HISTORY_HISTORY_TOOLBAR_HTML);
   source->AddResourcePath("history_toolbar.js",
                           IDR_MD_HISTORY_HISTORY_TOOLBAR_JS);
   source->AddResourcePath("history.js", IDR_MD_HISTORY_HISTORY_JS);
   source->AddResourcePath("icons.html", IDR_MD_HISTORY_ICONS_HTML);
   source->AddResourcePath("images/100/sign_in_promo.png",
                           IDR_MD_HISTORY_IMAGES_100_SIGN_IN_PROMO_PNG);
   source->AddResourcePath("images/200/sign_in_promo.png",
                           IDR_MD_HISTORY_IMAGES_200_SIGN_IN_PROMO_PNG);
+  source->AddResourcePath("lazy_render.html",
+                          IDR_MD_HISTORY_LAZY_RENDER_HTML);
+  source->AddResourcePath("lazy_render.js",
+                          IDR_MD_HISTORY_LAZY_RENDER_JS);
   source->AddResourcePath("list_container.html",
                           IDR_MD_HISTORY_LIST_CONTAINER_HTML);
   source->AddResourcePath("list_container.js",
                           IDR_MD_HISTORY_LIST_CONTAINER_JS);
   source->AddResourcePath("searched_label.html",
                           IDR_MD_HISTORY_SEARCHED_LABEL_HTML);
   source->AddResourcePath("searched_label.js",
                           IDR_MD_HISTORY_SEARCHED_LABEL_JS);
   source->AddResourcePath("shared_style.html",
                           IDR_MD_HISTORY_SHARED_STYLE_HTML);
@@ skipping 49 matching lines @@
   base::FeatureList::ClearInstanceForTesting();
   base::FeatureList::SetInstance(std::move(feature_list));
 }
 
 // static
 base::RefCountedMemory* MdHistoryUI::GetFaviconResourceBytes(
     ui::ScaleFactor scale_factor) {
   return ResourceBundle::GetSharedInstance().LoadDataResourceBytesForScale(
       IDR_HISTORY_FAVICON, scale_factor);
 }