Invalidate caret during paint invalidation

third_party/WebKit/Source/core/paint/PaintLayerScrollableArea.cpp

 /*
  * Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011, 2012 Apple Inc. All rights
  * reserved.
  *
  * Portions are Copyright (C) 1998 Netscape Communications Corporation.
  *
  * Other contributors:
  *   Robert O'Callahan <roc+@cs.cmu.edu>
  *   David Baron <dbaron@fas.harvard.edu>
  *   Christian Biesinger <cbiesinger@gmail.com>
@@ skipping 392 matching lines @@
     layer()->updateLayerPositionsAfterOverflowScroll();
     // Update regions, scrolling may change the clip of a particular region.
     frameView->updateDocumentAnnotatedRegions();
     frameView->setNeedsUpdateWidgetGeometries();
     updateCompositingLayersAfterScroll();
   }
 
   const LayoutBoxModelObject& paintInvalidationContainer =
       box().containerForPaintInvalidation();
   // The caret rect needs to be invalidated after scrolling
-  frame->selection().setCaretRectNeedsUpdate();
+  frame->selection().setCaretMayNeedPaintInvalidation();
 
   FloatQuad quadForFakeMouseMoveEvent = FloatQuad(FloatRect(
       layer()->layoutObject()->previousVisualRectIncludingCompositedScrolling(
           paintInvalidationContainer)));
 
   quadForFakeMouseMoveEvent =
       paintInvalidationContainer.localToAbsoluteQuad(quadForFakeMouseMoveEvent);
   frame->eventHandler().dispatchFakeMouseMoveEventSoonInQuad(
       quadForFakeMouseMoveEvent);
 
@@ skipping 1696 matching lines @@
 
 void PaintLayerScrollableArea::DelayScrollOffsetClampScope::
     clampScrollableAreas() {
   for (auto& scrollableArea : *s_needsClamp)
     scrollableArea->clampScrollOffsetAfterOverflowChange();
   delete s_needsClamp;
   s_needsClamp = nullptr;
 }
 
 }  // namespace blink