Revert of Remove about:srcdoc url conversion.

chrome/browser/history/history_utils.cc

Index: chrome/browser/history/history_utils.cc
diff --git a/chrome/browser/history/history_utils.cc b/chrome/browser/history/history_utils.cc
index 8bf6a91e67cd2a866125a0016f098035578df428..1efb0ef893413ed9b4ecb29b4616df3d6263cbdb 100644
--- a/chrome/browser/history/history_utils.cc
+++ b/chrome/browser/history/history_utils.cc
@@ -17,7 +17,6 @@
   // 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) ||
       url.SchemeIs(content::kChromeDevToolsScheme) ||
       url.SchemeIs(content::kChromeUIScheme) ||
       url.SchemeIs(content::kViewSourceScheme) ||
@@ -26,5 +25,8 @@
       url.SchemeIs(dom_distiller::kDomDistillerScheme))
     return false;
 
+  if (url == url::kAboutBlankURL)
+    return false;
+
   return true;
 }