Expose different task runner in RenderFrame for convenience

content/renderer/render_frame_impl.cc

Index: content/renderer/render_frame_impl.cc
diff --git a/content/renderer/render_frame_impl.cc b/content/renderer/render_frame_impl.cc
index ce8f2725ee2b813aa94e0886dfe200be4c48e5da..65c494661bf78b226e130826a2dcb65387bb5b1e 100644
--- a/content/renderer/render_frame_impl.cc
+++ b/content/renderer/render_frame_impl.cc
@@ -6744,6 +6744,18 @@ bool RenderFrameImpl::IsBrowserSideNavigationPending() {
   return browser_side_navigation_pending_;
 }
 
+base::SingleThreadTaskRunner* RenderFrameImpl::GetTimerTaskRunner() {
+  return GetWebFrame()->timerTaskRunner();
+}
+
+base::SingleThreadTaskRunner* RenderFrameImpl::GetLoadingTaskRunner() {
+  return GetWebFrame()->loadingTaskRunner();
+}
+
+base::SingleThreadTaskRunner* RenderFrameImpl::GetUnthrottledTaskRunner() {
+  return GetWebFrame()->unthrottledTaskRunner();
+}
+
 blink::WebPlugin* RenderFrameImpl::GetWebPluginForFind() {
   if (frame_->document().isPluginDocument())
     return frame_->document().to<WebPluginDocument>().plugin();