Intersection Observer support for OOPIF

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 3d83fd3c6c7a112f7e5cf02df7f2d22a42880efa..9b253f3dc1eb0b3b3e65164dbe2c89be2d1dd1e6 100644
--- a/third_party/WebKit/Source/core/frame/FrameView.cpp
+++ b/third_party/WebKit/Source/core/frame/FrameView.cpp
@@ -51,6 +51,8 @@
 #include "core/frame/Location.h"
 #include "core/frame/PageScaleConstraintsSet.h"
 #include "core/frame/PerformanceMonitor.h"
+#include "core/frame/RemoteFrame.h"
+#include "core/frame/RemoteFrameView.h"
 #include "core/frame/Settings.h"
 #include "core/frame/VisualViewport.h"
 #include "core/html/HTMLFrameElement.h"
@@ -4584,4 +4586,16 @@ int FrameView::initialViewportHeight() const {
   return m_initialViewportSize.height();
 }
 
+void FrameView::setViewportIntersectionFromParent(
+    const IntRect& viewportIntersection) {
+  m_remoteViewportIntersection = viewportIntersection;
+  updateAllLifecyclePhases();
+}
+
+IntRect FrameView::remoteViewportIntersection() {
+  IntRect intersection(m_remoteViewportIntersection);
+  intersection.move(scrollOffsetInt());
+  return intersection;
+}
+
 }  // namespace blink