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

content/browser/frame_host/render_frame_host_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/render_frame_host_impl.h"
 
 #include <algorithm>
 #include <utility>
 
 #include "base/bind.h"
@@ skipping 3409 matching lines @@
     if (pending_entry && pending_entry->GetUniqueID() == params.nav_entry_id) {
       pending_nav_entry_id = params.nav_entry_id;
       is_renderer_initiated = pending_entry->is_renderer_initiated();
     }
 
     return NavigationHandleImpl::Create(
         params.url, params.redirects, frame_tree_node_, is_renderer_initiated,
         params.was_within_same_page, base::TimeTicks::Now(),
         pending_nav_entry_id,
         false,   // started_from_context_menu
-        false);  // should_bypass_main_world_csp
+        false,   // should_bypass_main_world_csp
+        false);  // is_form_submission
   }
 
   // Determine if the current NavigationHandle can be used.
   if (navigation_handle_ && navigation_handle_->GetURL() == params.url) {
     return std::move(navigation_handle_);
   }
 
   // If the URL does not match what the NavigationHandle expects, treat the
   // commit as a new navigation. This can happen when loading a Data
   // navigation with LoadDataWithBaseURL.
@@ skipping 33 matching lines @@
   }
 
   // There is no pending NavigationEntry in these cases, so pass 0 as the
   // pending_nav_entry_id. If the previous handle was a prematurely aborted
   // navigation loaded via LoadDataWithBaseURL, propagate the entry id.
   return NavigationHandleImpl::Create(
       params.url, params.redirects, frame_tree_node_, is_renderer_initiated,
       params.was_within_same_page, base::TimeTicks::Now(),
       entry_id_for_data_nav,
       false,   // started_from_context_menu
-      false);  // should_bypass_main_world_csp
+      false,   // should_bypass_main_world_csp
+      false);  // is_form_submission
 }
 
 }  // namespace content