Delete selection gap code.

third_party/WebKit/Source/core/layout/LayoutView.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
@@ skipping 704 matching lines @@
 
     LayoutObject* o = start;
     stop = layoutObjectAfterPosition(end, endPos);
 
     while (o && o != stop) {
         if (o != start && o != end && o->canBeSelectionLeaf())
             o->setSelectionStateIfNeeded(SelectionInside);
         o = o->nextInPreOrder();
     }
 
-    layer()->clearBlockSelectionGapsBounds();
-
     // Now that the selection state has been updated for the new objects, walk them again and
     // put them in the new objects list.
     o = start;
     exploringBackwards = false;
     continueExploring = o && (o != stop);
     while (continueExploring) {
         if ((o->canBeSelectionLeaf() || o == start || o == end) && o->selectionState() != SelectionNone) {
             newSelectedObjects.set(o, o->selectionState());
             LayoutBlock* cb = o->containingBlock();
             while (cb && !cb->isLayoutView()) {
@@ skipping 45 matching lines @@
     for (SelectedBlockMap::iterator i = newSelectedBlocks.begin(); i != newBlocksEnd; ++i)
         i->key->setShouldInvalidateSelection();
 }
 
 void LayoutView::clearSelection()
 {
     // For querying Layer::compositingState()
     // This is correct, since destroying layout objects needs to cause eager paint invalidations.
     DisableCompositingQueryAsserts disabler;
 
-    layer()->invalidatePaintForBlockSelectionGaps();
     setSelection(0, -1, 0, -1, PaintInvalidationNewMinusOld);
 }
 
 bool LayoutView::hasPendingSelection() const
 {
     return m_frameView->frame().selection().isAppearanceDirty();
 }
 
 void LayoutView::commitPendingSelection()
 {
@@ skipping 188 matching lines @@
 }
 
 void LayoutView::sendMediaPositionChangeNotifications(const IntRect& visibleRect)
 {
     for (auto& media : m_mediaForPositionNotification) {
         media->notifyPositionMayHaveChanged(visibleRect);
     }
 }
 
 } // namespace blink