Pass the user_gesture context in the IPC message FrameMsg_CommitNavigation to the renderer.

content/browser/frame_host/navigation_request.cc

 // Copyright 2014 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/navigation_request.h"
 
 #include <utility>
 
 #include "content/browser/devtools/render_frame_devtools_agent_host.h"
 #include "content/browser/frame_host/frame_tree.h"
@@ skipping 158 matching lines @@
       -1,                      // page_id
       0,                       // nav_entry_id
       false,                   // is_same_document_history_load
       false,                   // is_history_navigation_in_new_child
       false,                   // has_subtree_history_items
       frame_tree_node->has_committed_real_load(),
       false,                   // intended_as_new_entry
       -1,                      // pending_history_list_offset
       current_history_list_offset, current_history_list_length,
       false,                   // is_view_source
-      false);                  // should_clear_history_list
+      false,                   // should_clear_history_list
+      begin_params.has_user_gesture);
   std::unique_ptr<NavigationRequest> navigation_request(
       new NavigationRequest(frame_tree_node, common_params, begin_params,
                             request_params, false, nullptr, nullptr));
   return navigation_request;
 }
 
 NavigationRequest::NavigationRequest(
     FrameTreeNode* frame_tree_node,
     const CommonNavigationParams& common_params,
     const BeginNavigationParams& begin_params,
@@ skipping 319 matching lines @@
 
   // Retrieve the RenderFrameHost that needs to commit the navigation.
   RenderFrameHostImpl* render_frame_host =
       navigation_handle_->GetRenderFrameHost();
   DCHECK(render_frame_host ==
              frame_tree_node_->render_manager()->current_frame_host() ||
          render_frame_host ==
              frame_tree_node_->render_manager()->speculative_frame_host());
 
   TransferNavigationHandleOwnership(render_frame_host);
+
+  DCHECK_EQ(request_params_.has_user_gesture, begin_params_.has_user_gesture);

[nasko, 2016/09/30 20:21:47]

nit: I'd move this DCHECK at the beginning of the method, as it doesn't seem to
depend on any of the code that is executed between here and the initial DCHECKs.

+
   render_frame_host->CommitNavigation(response_.get(), std::move(body_),
                                       common_params_, request_params_,
                                       is_view_source_);
 
   frame_tree_node_->ResetNavigationRequest(true);
 }
 
 }  // namespace content