Replace IdleNotification calls with IdleNotificationDeadline

BUG=none
R=hpayer@chromium.org,dcarney@chromium.org

Review URL: https://codereview.chromium.org/1028373002

Cr-Commit-Position: refs/heads/master@{#321981}

content/renderer/render_thread_impl.cc

@@ -1192,7 +1192,8 @@ void RenderThreadImpl::IdleHandler() {
   bool continue_timer = !webkit_shared_timer_suspended_;
 
   if (blink::mainThreadIsolate() &&
-      !blink::mainThreadIsolate()->IdleNotification(1000)) {
+      !blink::mainThreadIsolate()->IdleNotificationDeadline(
+          blink_platform_impl_->monotonicallyIncreasingTime() + 1.0)) {
     continue_timer = true;
   }