Replicate Content-Security-Policy into remote frame proxies.

content/browser/frame_host/navigator_impl.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/browser/frame_host/navigator_impl.h"
 
 #include <utility>
 
 #include "base/metrics/histogram.h"
 #include "base/time/time.h"
@@ skipping 494 matching lines @@
 
   // Save the origin of the new page.  Do this before calling
   // DidNavigateFrame(), because the origin needs to be included in the SwapOut
   // message, which is sent inside DidNavigateFrame().  SwapOut needs the
   // origin because it creates a RenderFrameProxy that needs this to initialize
   // its security context. This origin will also be sent to RenderFrameProxies
   // created via ViewMsg_New and FrameMsg_NewFrameProxy.
   render_frame_host->frame_tree_node()->SetCurrentOrigin(
       params.origin, params.has_potentially_trustworthy_unique_origin);
 
+  // Navigating to a new location means a new, fresh set of http headers and/or
+  // <meta> elements - we need to reset CSP policy to an empty set.
+  if (!is_navigation_within_page)
+    render_frame_host->frame_tree_node()->ResetContentSecurityPolicy();
+
   render_frame_host->frame_tree_node()->SetEnforceStrictMixedContentChecking(
       params.should_enforce_strict_mixed_content_checking);
 
   // When using --site-per-process, we notify the RFHM for all navigations,
   // not just main frame navigations.
   if (oopifs_possible) {
     FrameTreeNode* frame = render_frame_host->frame_tree_node();
     frame->render_manager()->DidNavigateFrame(
         render_frame_host, params.gesture == NavigationGestureUser);
   }
@@ skipping 622 matching lines @@
   if (pending_entry != controller_->GetVisibleEntry() ||
       !should_preserve_entry) {
     controller_->DiscardPendingEntry(true);
 
     // Also force the UI to refresh.
     controller_->delegate()->NotifyNavigationStateChanged(INVALIDATE_TYPE_URL);
   }
 }
 
 }  // namespace content