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// 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/tab_contents/tab_util.h"
#include "chrome/browser/profiles/profile.h"
#include "chrome/browser/ui/webui/chrome_web_ui_controller_factory.h"
#include "chrome/common/chrome_switches.h"
#include "content/public/browser/render_view_host.h"
#include "content/public/browser/site_instance.h"
#include "content/public/browser/web_contents.h"
#include "extensions/browser/extension_registry.h"
#include "url/gurl.h"
using content::RenderViewHost;
using content::SiteInstance;
using content::WebContents;
namespace tab_util {
content::WebContents* GetWebContentsByID(int render_process_id,
int render_view_id) {
RenderViewHost* render_view_host =
RenderViewHost::FromID(render_process_id, render_view_id);
if (!render_view_host)
return NULL;
return WebContents::FromRenderViewHost(render_view_host);
}
SiteInstance* GetSiteInstanceForNewTab(Profile* profile,
const GURL& url) {
// If |url| is a WebUI or extension, we set the SiteInstance up front so that
// we don't end up with an extra process swap on the first navigation.
if (ChromeWebUIControllerFactory::GetInstance()->UseWebUIForURL(
profile, url) ||
extensions::ExtensionRegistry::Get(
profile)->enabled_extensions().GetHostedAppByURL(url)) {
return SiteInstance::CreateForURL(profile, url);
}
// We used to share the SiteInstance for same-site links opened in new tabs,
// to leverage the in-memory cache and reduce process creation. It now
// appears that it is more useful to have such links open in a new process,
// so we create new tabs in a new BrowsingInstance.
return NULL;
}
} // namespace tab_util
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