Intersection Observer support for OOPIF

third_party/WebKit/public/web/WebRemoteFrameClient.h

Index: third_party/WebKit/public/web/WebRemoteFrameClient.h
diff --git a/third_party/WebKit/public/web/WebRemoteFrameClient.h b/third_party/WebKit/public/web/WebRemoteFrameClient.h
index d559413f2b8a7382d97be7228670501b3c7ee7da..dc0394e5e69dc0094dad83f9417beed2fbca057a 100644
--- a/third_party/WebKit/public/web/WebRemoteFrameClient.h
+++ b/third_party/WebKit/public/web/WebRemoteFrameClient.h
@@ -42,6 +42,9 @@ class WebRemoteFrameClient {
 
   virtual void frameRectsChanged(const WebRect&) {}
 
+  virtual void updateRemoteViewportIntersection(
+      const WebRect& viewportIntersection) {}
+
   virtual void visibilityChanged(bool visible) {}
 
   virtual void setHasReceivedUserGesture() {}