scheduler: Re-enable timer throttling for hidden frames

third_party/WebKit/Source/core/frame/FrameView.cpp

Index: third_party/WebKit/Source/core/frame/FrameView.cpp
diff --git a/third_party/WebKit/Source/core/frame/FrameView.cpp b/third_party/WebKit/Source/core/frame/FrameView.cpp
index 27eb979e482a74ca359dabdff10a03341f592bae..7ba537d146546fa7b7e27563d08cbb1e5c02e4b8 100644
--- a/third_party/WebKit/Source/core/frame/FrameView.cpp
+++ b/third_party/WebKit/Source/core/frame/FrameView.cpp
@@ -4577,6 +4577,11 @@ void FrameView::updateRenderThrottlingStatus(bool hidden,
       hasHandlers)
     scrollingCoordinator->touchEventTargetRectsDidChange();
 
+  if (m_frame->frameScheduler()) {
+    m_frame->frameScheduler()->setFrameVisible(!m_hiddenForThrottling);
+    m_frame->frameScheduler()->setCrossOrigin(m_frame->isCrossOriginSubframe());
+  }
+
 #if DCHECK_IS_ON()
   // Make sure we never have an unthrottled frame inside a throttled one.
   FrameView* parent = parentFrameView();