Remove about:srcdoc url conversion.

chrome/browser/history/history_utils.cc

 // Copyright 2015 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/history/history_utils.h"
 
 #include "chrome/common/url_constants.h"
 #include "components/dom_distiller/core/url_constants.h"
 #include "url/gurl.h"
 
 bool CanAddURLToHistory(const GURL& url) {
   if (!url.is_valid())
     return false;
 
   // TODO: We should allow kChromeUIScheme URLs if they have been explicitly
   // typed.  Right now, however, these are marked as typed even when triggered
   // by a shortcut or menu action.
   // Right now, URLs like about:version are not registered in the history.
   if (url.SchemeIs(url::kJavaScriptScheme) ||
+      url.SchemeIs(url::kAboutScheme) ||

[arthursonzogni, 2016/11/17 17:04:58]

FYI: from what I understood, about:xxxx URLs are rewritten to chrome:xxxx when
they are typed by the user and rewritten to about:blank/about:srcdoc when they
are coming from a renderer.

       url.SchemeIs(content::kChromeDevToolsScheme) ||
       url.SchemeIs(content::kChromeUIScheme) ||
       url.SchemeIs(content::kViewSourceScheme) ||
       url.SchemeIs(chrome::kChromeNativeScheme) ||
       url.SchemeIs(chrome::kChromeSearchScheme) ||
       url.SchemeIs(dom_distiller::kDomDistillerScheme))
     return false;
 
-  if (url == url::kAboutBlankURL)
-    return false;
-
   return true;
 }