1// Copyright (c) 2012 The Chromium Authors. All rights reserved. 2// Use of this source code is governed by a BSD-style license that can be 3// found in the LICENSE file. 4 5#include "chrome/browser/tab_contents/tab_util.h" 6 7#include "chrome/browser/profiles/profile.h" 8#include "chrome/browser/ui/webui/chrome_web_ui_controller_factory.h" 9#include "chrome/common/chrome_switches.h" 10#include "content/public/browser/render_view_host.h" 11#include "content/public/browser/site_instance.h" 12#include "content/public/browser/web_contents.h" 13#include "url/gurl.h" 14 15#if defined(ENABLE_EXTENSIONS) 16#include "extensions/browser/extension_registry.h" 17#endif 18 19using content::RenderViewHost; 20using content::SiteInstance; 21using content::WebContents; 22 23namespace tab_util { 24 25content::WebContents* GetWebContentsByID(int render_process_id, 26 int render_view_id) { 27 RenderViewHost* render_view_host = 28 RenderViewHost::FromID(render_process_id, render_view_id); 29 if (!render_view_host) 30 return NULL; 31 return WebContents::FromRenderViewHost(render_view_host); 32} 33 34SiteInstance* GetSiteInstanceForNewTab(Profile* profile, 35 const GURL& url) { 36 // If |url| is a WebUI or extension, we set the SiteInstance up front so that 37 // we don't end up with an extra process swap on the first navigation. 38 if (ChromeWebUIControllerFactory::GetInstance()->UseWebUIForURL(profile, url)) 39 return SiteInstance::CreateForURL(profile, url); 40 41#if defined(ENABLE_EXTENSIONS) 42 if (extensions::ExtensionRegistry::Get( 43 profile)->enabled_extensions().GetHostedAppByURL(url)) 44 return SiteInstance::CreateForURL(profile, url); 45#endif 46 47 // We used to share the SiteInstance for same-site links opened in new tabs, 48 // to leverage the in-memory cache and reduce process creation. It now 49 // appears that it is more useful to have such links open in a new process, 50 // so we create new tabs in a new BrowsingInstance. 51 return NULL; 52} 53 54} // namespace tab_util 55