Throttle rendering pipeline for invisible iframes

third_party/WebKit/Source/web/WebViewImpl.cpp

Index: third_party/WebKit/Source/web/WebViewImpl.cpp
diff --git a/third_party/WebKit/Source/web/WebViewImpl.cpp b/third_party/WebKit/Source/web/WebViewImpl.cpp
index a20c4c51ab3c0c1208d5c916a971d4eb0e729c4e..dcbe037f8fd47732d85719561056794f722947ee 100644
--- a/third_party/WebKit/Source/web/WebViewImpl.cpp
+++ b/third_party/WebKit/Source/web/WebViewImpl.cpp
@@ -1932,6 +1932,14 @@ void WebViewImpl::paint(WebCanvas* canvas, const WebRect& rect)
     Platform::current()->histogramCustomCounts("Renderer4.SoftwarePaintMegapixPerSecond", pixelsPerSec / 1000000, 10, 210, 30);
 }
 
+void WebViewImpl::didCommitCompositorFrame()
+{
+    if (!mainFrameImpl() || !mainFrameImpl()->frameView())
+        return;
+    FrameView* view = mainFrameImpl()->frameView();
+    view->finalizeLifecycleUpdate();
+}
+
 #if OS(ANDROID)
 void WebViewImpl::paintCompositedDeprecated(WebCanvas* canvas, const WebRect& rect)
 {