- message_loop_->PostTask(FROM_HERE,
- base::Bind(&WebContentsTracker::MaybeDoCallback, this,
- render_process_id, render_view_id));
+void WebContentsTracker::OnPossibleTargetChange(bool force_callback_run) {
+ DCHECK_CURRENTLY_ON(BrowserThread::UI);
+
+ RenderWidgetHost* const rwh = GetTargetRenderWidgetHost();
+ if (rwh == last_target_ && !force_callback_run)
+ return;
+ DVLOG(1) << "Will report target change from RenderWidgetHost@" << last_target_
+ << " to RenderWidgetHost@" << rwh;
+ last_target_ = rwh;
+
+ if (message_loop_->BelongsToCurrentThread()) {
+ MaybeDoCallback(rwh);
+ } else {
+ message_loop_->PostTask(
+ FROM_HERE,
+ base::Bind(&WebContentsTracker::MaybeDoCallback, this, rwh));
+ }