Back out r10487 too

chrome/browser/history/history.cc

 // Copyright (c) 2006-2008 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.
 
 // The history system runs on a background thread so that potentially slow
 // database operations don't delay the browser. This backend processing is
 // represented by HistoryBackend. The HistoryService's job is to dispatch to
 // that thread.
 //
 // Main thread                       History thread
@@ skipping 560 matching lines @@
 bool HistoryService::CanAddURL(const GURL& url) const {
   if (!url.is_valid())
     return false;
 
   if (url.SchemeIs(chrome::kJavaScriptScheme) ||
       url.SchemeIs(chrome::kChromeUIScheme) ||
       url.SchemeIs(chrome::kViewSourceScheme))
     return false;
 
   if (url.SchemeIs(chrome::kAboutScheme)) {
-    if (LowerCaseEqualsASCII(url.spec(), chrome::kAboutBlankURL))
+    std::string path = url.path();
+    if (path.empty() || LowerCaseEqualsASCII(path, "blank"))
       return false;
     // We allow all other about URLs since the user may like to see things
     // like "about:memory" or "about:histograms" in their history and
     // autocomplete.
   }
 
   return true;
 }
 
 void HistoryService::SetInMemoryBackend(
@@ skipping 65 matching lines @@
   NotificationService::current()->Notify(type, source, det);
 }
 
 void HistoryService::OnDBLoaded() {
   LOG(INFO) << "History backend finished loading";
   backend_loaded_ = true;
   NotificationService::current()->Notify(NotificationType::HISTORY_LOADED,
                                          Source<Profile>(profile_),
                                          Details<HistoryService>(this));
 }