Revert "Log to UMA why we would load a third-party frame"

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 35d4fbbbbf42bc5802b849f3a6507da5d2daf093..419d75ec172dbeecae388a6c79699fff76fb6e8e 100644
--- a/third_party/WebKit/Source/core/frame/FrameView.cpp
+++ b/third_party/WebKit/Source/core/frame/FrameView.cpp
@@ -4308,28 +4308,11 @@ void FrameView::updateViewportIntersectionIfNeeded() {
   m_viewportIntersectionValid = true;
   FrameView* parent = parentFrameView();
   if (!parent) {
-    HTMLFrameOwnerElement* element = frame().deprecatedLocalOwner();
-    if (!element)
-      frame().document()->maybeRecordLoadReason(WouldLoadOutOfProcess);
-    // Having no layout object means the frame is not drawn.
-    else if (!element->layoutObject())
-      frame().document()->maybeRecordLoadReason(WouldLoadDisplayNone);
     m_viewportIntersection = frameRect();
     return;
   }
   ASSERT(!parent->m_needsUpdateViewportIntersection);
 
-  bool parentLoaded = parent->frame().document()->wouldLoadReason() > Created;
-  // If the parent wasn't loaded, the children won't be either.
-  if (parentLoaded) {
-    if (frameRect().isEmpty())
-      frame().document()->maybeRecordLoadReason(WouldLoadZeroByZero);
-    else if (frameRect().maxY() < 0)
-      frame().document()->maybeRecordLoadReason(WouldLoadAbove);
-    else if (frameRect().maxX() < 0)
-      frame().document()->maybeRecordLoadReason(WouldLoadLeft);
-  }
-
   // If our parent is hidden, then we are too.
   if (parent->m_viewportIntersection.isEmpty()) {
     m_viewportIntersection = parent->m_viewportIntersection;
@@ -4349,9 +4332,6 @@ void FrameView::updateViewportIntersectionIfNeeded() {
   // content while scrolling.
   IntRect viewport = parent->m_viewportIntersection;
   m_viewportIntersection.intersect(viewport);
-
-  if (parentLoaded && !m_viewportIntersection.isEmpty())
-    frame().document()->maybeRecordLoadReason(WouldLoadVisible);
 }
 
 void FrameView::updateViewportIntersectionsForSubtree(
@@ -4437,6 +4417,8 @@ void FrameView::notifyRenderThrottlingObservers() {
 
   updateThrottlingStatus();
 
+  frame().document()->onVisibilityMaybeChanged(!m_hiddenForThrottling);
+
   bool becameThrottled = !wasThrottled && canThrottleRendering();
   bool becameUnthrottled = wasThrottled && !canThrottleRendering();
   ScrollingCoordinator* scrollingCoordinator = this->scrollingCoordinator();