[Clean up] Fix the comment for SiteIntance::CreateForURL

content/browser/site_instance_impl.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 "content/browser/site_instance_impl.h"
 
 #include "base/command_line.h"
 #include "content/browser/browsing_instance.h"
 #include "content/browser/child_process_security_policy_impl.h"
 #include "content/browser/frame_host/debug_urls.h"
@@ skipping 218 matching lines @@
 }
 
 /*static*/
 SiteInstance* SiteInstance::Create(BrowserContext* browser_context) {
   return new SiteInstanceImpl(new BrowsingInstance(browser_context));
 }
 
 /*static*/
 SiteInstance* SiteInstance::CreateForURL(BrowserContext* browser_context,
                                          const GURL& url) {
-  // This BrowsingInstance may be deleted if it returns an existing
-  // SiteInstance.
+  // This will create a new SiteInstance and BrowsingInstance.
   scoped_refptr<BrowsingInstance> instance(
       new BrowsingInstance(browser_context));
   return instance->GetSiteInstanceForURL(url);
 }
 
 /*static*/
 bool SiteInstance::IsSameWebSite(BrowserContext* browser_context,
                                  const GURL& real_src_url,
                                  const GURL& real_dest_url) {
   GURL src_url = SiteInstanceImpl::GetEffectiveURL(browser_context,
@@ skipping 97 matching lines @@
       *base::CommandLine::ForCurrentProcess();
   if (command_line.HasSwitch(switches::kEnableStrictSiteIsolation) ||
       command_line.HasSwitch(switches::kSitePerProcess)) {
     ChildProcessSecurityPolicyImpl* policy =
         ChildProcessSecurityPolicyImpl::GetInstance();
     policy->LockToOrigin(process_->GetID(), site_);
   }
 }
 
 }  // namespace content