Fix tabs duplication when restoring last closed window.

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"
@@ skipping 90 matching lines @@
 void BrowserLiveTabContext::CloseTab() {
   chrome::CloseTab(browser_);
 }
 
 // static
 sessions::LiveTabContext* BrowserLiveTabContext::Create(
     Profile* profile,
     const std::string& app_name) {
   Browser* browser;
   if (app_name.empty()) {
-    browser = new Browser(Browser::CreateParams(profile));
+    auto params = Browser::CreateParams(profile);
+    params.dont_restore = true;
+    browser = new Browser(params);
   } else {
     // Only trusted app popup windows should ever be restored.
     browser = new Browser(Browser::CreateParams::CreateForApp(
         app_name, true /* trusted_source */, gfx::Rect(), profile));
   }
   if (browser)
     return browser->live_tab_context();
   else
     return NULL;
 }
 
 // static
 sessions::LiveTabContext* BrowserLiveTabContext::FindContextForWebContents(
     const WebContents* contents) {
   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;
 }