PlzNavigate: Enforce 'form-action' CSP on the browser-side.

content/public/browser/navigation_handle.cc

 // Copyright 2015 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/browser/navigation_handle.h"
 
 #include <utility>
 
 #include "content/browser/frame_host/navigation_handle_impl.h"
 #include "content/browser/frame_host/navigator.h"
@@ skipping 17 matching lines @@
     bool committed,
     net::Error error,
     bool is_same_page) {
   RenderFrameHostImpl* rfhi =
       static_cast<RenderFrameHostImpl*>(render_frame_host);
   std::unique_ptr<NavigationHandleImpl> handle_impl =
       NavigationHandleImpl::Create(
           url, std::vector<GURL>(), rfhi->frame_tree_node(),
           true,  // is_renderer_initiated
           is_same_page, base::TimeTicks::Now(), 0,
-          false,                   // started_from_context_menu
-          CSPDisposition::CHECK);  // should_check_main_world_csp
+          false,                  // started_from_context_menu
+          CSPDisposition::CHECK,  // should_check_main_world_csp
+          false);                 // is_form_submission
   handle_impl->set_render_frame_host(rfhi);
   if (error != net::OK)
     handle_impl->set_net_error_code(error);
   if (committed)
     handle_impl->CallDidCommitNavigationForTesting(url);
   return std::unique_ptr<NavigationHandle>(std::move(handle_impl));
 }
 
 }  // namespace content