CSP: Prevent form-action to leak path on redirect.

third_party/WebKit/Source/core/loader/FrameLoader.cpp

 /*
  * Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights
  * reserved.
  * Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies)
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved.
  * (http://www.torchmobile.com/)
  * Copyright (C) 2008 Alp Toker <alp@atoker.com>
  * Copyright (C) Research In Motion Limited 2009. All rights reserved.
  * Copyright (C) 2011 Kris Jordan <krisjordan@gmail.com>
  * Copyright (C) 2011 Google Inc. All rights reserved.
@@ skipping 1636 matching lines @@
         m_frame->owner()->dispatchLoad();
         return NavigationPolicyIgnore;
       }
     }
   }
 
   bool isFormSubmission = type == NavigationTypeFormSubmitted ||
                           type == NavigationTypeFormResubmitted;
   if (isFormSubmission &&
       !m_frame->document()->contentSecurityPolicy()->allowFormAction(
-          request.url()))
+          request.url(), request.redirectStatus())) {
     return NavigationPolicyIgnore;
+  }
 
   bool replacesCurrentHistoryItem =
       frameLoadType == FrameLoadTypeReplaceCurrentItem;
   policy = client()->decidePolicyForNavigation(request, loader, type, policy,
                                                replacesCurrentHistoryItem,
                                                isClientRedirect, form);
   if (policy == NavigationPolicyCurrentTab ||
       policy == NavigationPolicyIgnore ||
       policy == NavigationPolicyHandledByClient ||
       policy == NavigationPolicyHandledByClientForInitialHistory) {
@@ skipping 312 matching lines @@
       frameLoadRequest.clientRedirect());
 
   loader->setLoadType(loadType);
   loader->setNavigationType(navigationType);
   loader->setReplacesCurrentHistoryItem(loadType ==
                                         FrameLoadTypeReplaceCurrentItem);
   return loader;
 }
 
 }  // namespace blink