Make rendering timeouts work even if paint data received early

content/renderer/render_widget.cc

Index: content/renderer/render_widget.cc
diff --git a/content/renderer/render_widget.cc b/content/renderer/render_widget.cc
index afd5e8b783fa0ece50a4750c5c9eee8c7ed932f7..9470785c8b33532eb3b432d0b6ce31b70a3911bd 100644
--- a/content/renderer/render_widget.cc
+++ b/content/renderer/render_widget.cc
@@ -1394,6 +1394,11 @@ void RenderWidget::didFirstLayoutAfterFinishedParsing() {
   // TODO(dglazkov): Use this hook to drive CapturePageInfo.
 }
 
+void RenderWidget::didFirstPaintAfterLoad() {
+  QueueMessage(new ViewHostMsg_DidFirstPaintAfterLoad(routing_id_),
+               MESSAGE_DELIVERY_POLICY_WITH_VISUAL_STATE);
+}
+
 void RenderWidget::WillBeginCompositorFrame() {
   TRACE_EVENT0("gpu", "RenderWidget::willBeginCompositorFrame");