Use TabLoader in TabRestoreService.

chrome/browser/ui/browser_live_tab_context.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/browser_live_tab_context.h"
 
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/browser_commands.h"
 #include "chrome/browser/ui/browser_finder.h"
 #include "chrome/browser/ui/browser_tabrestore.h"
 #include "chrome/browser/ui/browser_window.h"
 #include "chrome/browser/ui/tabs/tab_strip_model.h"
 #include "components/sessions/content/content_live_tab.h"
 #include "components/sessions/content/content_platform_specific_tab_data.h"
 #include "content/public/browser/navigation_controller.h"
 #include "content/public/browser/session_storage_namespace.h"
 
+#if BUILDFLAG(ENABLE_SESSION_SERVICE)
+#include "chrome/browser/sessions/tab_loader.h"
+#endif
+
 using content::NavigationController;
 using content::SessionStorageNamespace;
 using content::WebContents;
 
 void BrowserLiveTabContext::ShowBrowserWindow() {
   browser_->window()->Show();
 }
 
 const SessionID& BrowserLiveTabContext::GetSessionID() const {
   return browser_->session_id();
@@ skipping 39 matching lines @@
       tab_platform_data
           ? static_cast<const sessions::ContentPlatformSpecificTabData*>(
                 tab_platform_data)
                 ->session_storage_namespace()
           : nullptr;
 
   WebContents* web_contents = chrome::AddRestoredTab(
       browser_, navigations, tab_index, selected_navigation, extension_app_id,
       select, pin, from_last_session, storage_namespace, user_agent_override);
 
+#if BUILDFLAG(ENABLE_SESSION_SERVICE)
+  // The focused tab will be loaded by Browser, and TabLoader will load the
+  // rest.
+  if (!select) {
+    // Regression check: make sure that the tab hasn't started to load
+    // immediately.
+    DCHECK(web_contents->GetController().NeedsReload());
+    DCHECK(!web_contents->IsLoading());
+  }
+  std::vector<TabLoader::RestoredTab> restoredTabs;

[sky, 2017/03/02 19:12:05]

restored_tabs

[Michael K. (Yandex Team), 2017/03/03 08:26:37]

Done.

+  restoredTabs.emplace_back(web_contents, select, !extension_app_id.empty(),
+                            pin);
+  TabLoader::RestoreTabs(restoredTabs, base::TimeTicks::Now());
+#else   // BUILDFLAG(ENABLE_SESSION_SERVICE)
+  // Load the tab manually if there is no TabLoader.
+  web_contents->GetController().LoadIfNecessary();
+#endif  // BUILDFLAG(ENABLE_SESSION_SERVICE)
+
   return sessions::ContentLiveTab::GetForWebContents(web_contents);
 }
 
 sessions::LiveTab* BrowserLiveTabContext::ReplaceRestoredTab(
     const std::vector<sessions::SerializedNavigationEntry>& navigations,
     int selected_navigation,
     bool from_last_session,
     const std::string& extension_app_id,
     const sessions::PlatformSpecificTabData* tab_platform_data,
     const std::string& user_agent_override) {
@@ skipping 39 matching lines @@
   Browser* browser = chrome::FindBrowserWithWebContents(contents);
   return browser ? browser->live_tab_context() : nullptr;
 }
 
 // static
 sessions::LiveTabContext* BrowserLiveTabContext::FindContextWithID(
     SessionID::id_type desired_id) {
   Browser* browser = chrome::FindBrowserWithID(desired_id);
   return browser ? browser->live_tab_context() : nullptr;
 }