Do not sanitize about:blank/#foo & about:blank?foo

content/public/common/url_utils.cc

 // Copyright 2013 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/public/common/url_utils.h"
 
 #include "build/build_config.h"
 #include "content/common/url_schemes.h"
 #include "content/public/common/url_constants.h"
 
 namespace content {
 
 bool HasWebUIScheme(const GURL& url) {
   return url.SchemeIs(kChromeDevToolsScheme) ||
          url.SchemeIs(kChromeUIScheme);
 }
 
 bool IsSavableURL(const GURL& url) {
   for (auto& scheme : GetSavableSchemes()) {
     if (url.SchemeIs(scheme))
       return true;
   }
   return false;
 }
 
+bool IsAboutBlankURL(const GURL& url) {
+  if (!url.SchemeIs(url::kAboutScheme))
+    return false;
+
+  if (url.has_host() || url.has_username() || url.has_password() ||
+      url.has_port()) {
+    return false;
+  }
+
+  if (url.path() != kAboutBlankPath && url.path() !=kAboutBlankWithHashPath)

[Charlie Reis, 2017/01/19 22:36:35]

nit: Space after !=

[clamy, 2017/01/20 12:51:53]

Done.

+    return false;
+
+  return true;
+}
+
 }  // namespace content