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

content/renderer/render_frame_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/renderer/render_frame_impl.h"
 
 #include <map>
 #include <string>
 #include <utility>
 #include <vector>
@@ skipping 4841 matching lines @@
 void RenderFrameImpl::FocusedNodeChangedForAccessibility(const WebNode& node) {
   if (render_accessibility())
     render_accessibility()->AccessibilityFocusedNodeChanged(node);
 }
 
 // PlzNavigate
 void RenderFrameImpl::OnCommitNavigation(
     const ResourceResponseHead& response,
     const GURL& stream_url,
     const CommonNavigationParams& common_params,
-    const RequestNavigationParams& request_params) {
+    const RequestNavigationParams& request_params,
+    bool user_gesture) {
   CHECK(IsBrowserSideNavigationEnabled());
   // This will override the url requested by the WebURLLoader, as well as
   // provide it with the response to the request.
   std::unique_ptr<StreamOverrideParameters> stream_override(
       new StreamOverrideParameters());
   stream_override->stream_url = stream_url;
   stream_override->response = response;
 
+  // If the request was initiated in the context of a user gesture then make
+  // sure that the navigation also executes in the context of a user gesture.
+  std::unique_ptr<blink::WebScopedUserGesture> gesture(
+      user_gesture ? new blink::WebScopedUserGesture : nullptr);
+
   NavigateInternal(common_params, StartNavigationParams(), request_params,
                    std::move(stream_override));
 }
 
 // PlzNavigate
 void RenderFrameImpl::OnFailedNavigation(
     const CommonNavigationParams& common_params,
     const RequestNavigationParams& request_params,
     bool has_stale_copy_in_cache,
     int error_code) {
@@ skipping 1529 matching lines @@
   // event target. Potentially a Pepper plugin will receive the event.
   // In order to tell whether a plugin gets the last mouse event and which it
   // is, we set |pepper_last_mouse_event_target_| to null here. If a plugin gets
   // the event, it will notify us via DidReceiveMouseEvent() and set itself as
   // |pepper_last_mouse_event_target_|.
   pepper_last_mouse_event_target_ = nullptr;
 #endif
 }
 
 }  // namespace content