Add option to disallow the discarding of a tab that was previously discarded.

chrome/browser/ui/browser.cc

 // Copyright 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.h"
 
 #if defined(OS_WIN)
 #include <windows.h>
 #include <shellapi.h>
 #endif  // defined(OS_WIN)
@@ skipping 114 matching lines @@
 #include "chrome/browser/ui/search/search_tab_helper.h"
 #include "chrome/browser/ui/search_engines/search_engine_tab_helper.h"
 #include "chrome/browser/ui/settings_window_manager.h"
 #include "chrome/browser/ui/singleton_tabs.h"
 #include "chrome/browser/ui/status_bubble.h"
 #include "chrome/browser/ui/sync/browser_synced_window_delegate.h"
 #include "chrome/browser/ui/tab_contents/core_tab_helper.h"
 #include "chrome/browser/ui/tab_dialogs.h"
 #include "chrome/browser/ui/tab_helpers.h"
 #include "chrome/browser/ui/tab_modal_confirm_dialog.h"
+#include "chrome/browser/ui/tabs/tab_discard_state.h"
 #include "chrome/browser/ui/tabs/tab_menu_model.h"
 #include "chrome/browser/ui/tabs/tab_strip_model.h"
 #include "chrome/browser/ui/tabs/tab_strip_model_utils.h"
 #include "chrome/browser/ui/tabs/tab_utils.h"
 #include "chrome/browser/ui/toolbar/toolbar_model_impl.h"
 #include "chrome/browser/ui/unload_controller.h"
 #include "chrome/browser/ui/validation_message_bubble.h"
 #include "chrome/browser/ui/website_settings/permission_bubble_manager.h"
 #include "chrome/browser/ui/webui/signin/login_ui_service.h"
 #include "chrome/browser/ui/webui/signin/login_ui_service_factory.h"
@@ skipping 902 matching lines @@
 
   // Let the BrowserWindow do its handling.  On e.g. views this changes the
   // focused object, which should happen before we update the toolbar below,
   // since the omnibox expects the correct element to already be focused when it
   // is updated.
   window_->OnActiveTabChanged(old_contents, new_contents, index, reason);
 
   exclusive_access_manager_->OnTabDetachedFromView(old_contents);
 
   // Discarded tabs always get reloaded.
-  if (tab_strip_model_->IsTabDiscarded(index)) {
+  if (TabDiscardState::IsDiscarded(new_contents)) {
     LOG(WARNING) << "Reloading discarded tab at " << index;
     static int reload_count = 0;
     UMA_HISTOGRAM_CUSTOM_COUNTS(
         "Tabs.Discard.ReloadCount", ++reload_count, 1, 1000, 50);
     chrome::Reload(this, CURRENT_TAB);
   }
 
   // If we have any update pending, do it now.
   if (chrome_updater_factory_.HasWeakPtrs() && old_contents)
     ProcessPendingUIUpdates();
@@ skipping 1634 matching lines @@
   if (contents && !allow_js_access) {
     contents->web_contents()->GetController().LoadURL(
         target_url,
         content::Referrer(),
         ui::PAGE_TRANSITION_LINK,
         std::string());  // No extra headers.
   }
 
   return contents != NULL;
 }