Remove about:srcdoc url conversion.

content/public/browser/site_instance.h

 // 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.
 
 #ifndef CONTENT_PUBLIC_BROWSER_SITE_INSTANCE_H_
 #define CONTENT_PUBLIC_BROWSER_SITE_INSTANCE_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 141 matching lines @@
       content::BrowserContext* browser_context,
       const GURL& url);
 
   // Return whether both URLs are part of the same web site, for the purpose of
   // assigning them to processes accordingly.  The decision is currently based
   // on the registered domain of the URLs (google.com, bbc.co.uk), as well as
   // the scheme (https, http).  This ensures that two pages will be in
   // the same process if they can communicate with other via JavaScript.
   // (e.g., docs.google.com and mail.google.com have DOM access to each other
   // if they both set their document.domain properties to google.com.)
-  // Note that if the destination is a blank page, we consider that to be part
-  // of the same web site for the purposes for process assignment.
+  // Note that if the destination is about:blank or about:srcdoc, we consider
+  // that to be part of the same web site for the purposes for process
+  // assignment.
   static bool IsSameWebSite(content::BrowserContext* browser_context,
                             const GURL& src_url,
                             const GURL& dest_url);
 
   // Returns the site for the given URL, which includes only the scheme and
   // registered domain.  Returns an empty GURL if the URL has no host.
   static GURL GetSiteForURL(BrowserContext* context, const GURL& url);
 
  protected:
   friend class base::RefCounted<SiteInstance>;
 
   SiteInstance() {}
   virtual ~SiteInstance() {}
 };
 
 }  // namespace content.
 
 #endif  // CONTENT_PUBLIC_BROWSER_SITE_INSTANCE_H_