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 19 using content::RenderViewHost; 20 using content::SiteInstance; 21 using content::WebContents; 22 23 namespace tab_util { 24 25 content::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 34 SiteInstance* 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
