Support running tests under LayoutTests/http/tests/local as local file, in or...

webkit/glue/webpreferences.cc

 // Copyright (c) 2009 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 "webkit/glue/webpreferences.h"
 
 #include "base/string_util.h"
 #include "webkit/api/public/WebKit.h"
 #include "webkit/api/public/WebSettings.h"
 #include "webkit/api/public/WebString.h"
@@ skipping 46 matching lines @@
   // Safari uses the same default. It is unlikley an embedder would want to
   // change this, since it would break existing rich text editors.
   settings->setEditableLinkBehaviorNeverLive();
 
   settings->setFontRenderingModeNormal();
   settings->setJavaEnabled(java_enabled);
 
   // Turn this on to cause WebCore to paint the resize corner for us.
   settings->setShouldPaintCustomScrollbars(true);
 
-  // Mitigate attacks from local HTML files by not granting file:// URLs
-  // universal access.
-  settings->setAllowUniversalAccessFromFileURLs(false);
+  // By default, allow_universal_access_from_file_urls is set to false and thus
+  // we mitigate attacks from local HTML files by not granting file:// URLs
+  // universal access. Only test shell will enable this.
+  settings->setAllowUniversalAccessFromFileURLs(
+      allow_universal_access_from_file_urls);
 
   // We prevent WebKit from checking if it needs to add a "text direction"
   // submenu to a context menu. it is not only because we don't need the result
   // but also because it cause a possible crash in Editor::hasBidiSelection().
   settings->setTextDirectionSubmenuInclusionBehaviorNeverIncluded();
 
   // Web inspector settings need to be passed in differently.
   web_view->SetInspectorSettings(inspector_settings);
 }